- Type
- Crossword Puzzle

space between two intersecting lines angle

having angles or sharp corners angular

cause to change direction by interposing something deflect

cause to become twisted together entangle

bend or become bent flex

capable of bending easily flexible

severely mutilate, disfigure, or damage mangle

four-sided plane figure quadrangle

plane figure with four straight sides rectangle

throw back without absorbing it reflect

throwing back by a body or surface of light reflection

providing a reflection reflective

response to a stimulus reflex

twist together tangle

plane figure with three straight sides triangle

- Type
- Crossword Puzzle

A closed plane figure formed by three or more straight sides that are line segments. polygon

A polygon with three sides and three angles. triangle

A polygon with four sides and four angles. quadrilateral

A polygon with five sides and five angles. pentagon

A polygon with six sides and six angles. hexagon

A polygon with seven sides and seven angles. heptagon

A polygon with eight sides and eight angles. octagon

A polygon with nine sides and nine angles. nonagon

A polygon with ten sides and ten angles. decagon

An angle that measures greater than 0 degrees and less than 90 degrees. acute

An angle that forms a square corner and has a measure of 90 degrees. right

An angle whose measure is 180 degrees. straight

An angle that measures greater than 90 degrees and less than 180 degrees. obtuse

An exact location in space. point

A straight path of points in a plane that continues without end in both direcetions with NO endpoints. line

A part of a line that includes two points called endpoints and all the points between them. line segment

A part of a line; it has one endpoint and continues without end in one direction. ray

The point at either end of a line segment of the starting point of a ray. endpoint

Lines in the same plane that never intersect and are always the same distance apart. parallel

Two lines that intersect to form four right angles. perpendicular

Lines that cross each other at exactly one point. intersecting

The number of square units needed to cover a surface. area

The distance around a figure. perimeter

A parallelogram with four equal, or congruent, sides and four right angles. square

A parallelogram with opposite sidees that are equal, or congrudent, and with four right angles. rectangle

A parallelogram with four equal, or congruent, sides. rhombus

A quadrilateral with exactly one pair of parallel sides. trapezoid

A quadrilateral whose opposite sides are parallel and equal, or congruent. parallelogram

Having the EXACT same size and shape. congruent

- Type
- Crossword Puzzle

part of a line that is bounded by two distinct end points segment

2 angles that add up to 180 degrees supplementary

exactly similar parts facing each other or around an axis. symmetry

a figure with four equal straight sides and four right angles square

A line with a start point but no end point ray

having a common vertex and a common side adjacent

a figure with three straight sides and three angles triangle

a nine-sided figure nonagon

a transformation in which the figure is reflected across a line, creating a mirror image reflection

a quadrilateral with only one pair of parallel sides trapezoid

at an angle of 90° to a given line perpendicular

each angular point of a polygon vertex

2 angles that add up to 90 degrees complementary

a transformation in which the figure is turned around a fixed center point rotation

a figure with four straight sides and four right angles, especially one with unequal adjacent sides, in contrast to a square rectangle

A long thin mark made by a pen line

the continuous line forming the boundary of a closed figure perimeter

a figure with at least three straight sides and angles polygon

a seven-sided figure heptagon

the longest side of a right triangle hypotenuse

a transformation in which every point of the figure is moved in the same direction and for the same distance translation

the space between two intersecting lines or surfaces at or close to the point where they meet angle

a parallelogram with opposite equal acute angles, opposite equal obtuse angles, and four equal sides rhombus

a triangle that has three unequal sides scalene

a transformation in which the figure is enlarged or decreased in size dilation

- Type
- Crossword Puzzle

Capable of bending without breaking Flexible

Not capable of bending without breaking inflexible

An angle that is greater than 180 degrees because the angle is bent beyond the straight line reflex angle

To bend or throw back light or heat; to fold or turn back reflect

A muscle that bends a part of the body, such as an arm or leg flexor

The bending of a person's voice so that it does not sound boring or within only one tone; making one's voice go up and down inflection

The image in a mirror that is a result of bending light when it is thrown back Reflection

To turn or move to one side; to bend or swerve deflect

Bent or turned backward retroflex

To bend around or curve circumflex

- Type
- Word Search

triangular

triangle

tangle

reflex

reflective

reflection

reflect

quadrangle

mangle

inflexible

flexible

flexibility

flex

entanglement

entangle

disentangle

deflect

angular

angle

- Type
- Word Search

triangle

triangular

tangle

reflex

reflective

reflection

reflect

rectangle

quadrangle

mangle

inflexible

flexible

flexibility

flex

entanglement

entangle

disentangle

deflect

angular

angle

- Type
- Crossword Puzzle

A triangle that contains only angles that are less than 90 degrees. Acute Triangle

The amount of rotation needed to bring one line or plane into coincidence with another, generally measured in radians or degrees. Angle

The number of square units required to cover a surface. Area

1. An imaginary line through a body, about which it rotates. Axis

A 3D point defining the geometric center of a solid. Centroid

A round plane figure whose boundary consists of points equidistant from the center Circle

1. A triangle located round a polygon such as a circle. Circumscribe

A solid composed of two congruent circles in parallel planes, their interiors, and all the line segments parallel to the axis with endpoints on the two circles. Cylinder

The measure of mass density is a measure of mass per volume. Density

A straight line passing from side to side through the center of a circle or sphere. Diameter

A shape generated by a point moving in a plane so that the sum of its distances from two other points (the foci) is constant and equal to the major axis Ellipse

A curve formed at the interior intersection between two or more surfaces. Fillet

To draw a figure within another so that their boundaries touch but do not intersect. Inscribe

The amount of matter in an object or the quantity of the inertia of the object. Mass

A triangle with one angle that is greater than 90 degrees. Obtuse Triangle

A four-sided polygon with both pairs of opposite sides parallel. Parallelogram

The numerical value of the ratio of the circumference of a circle to its diameter Pi

Any plane figure bounded by straight lines. Polygon

A solid geometric figure whose two ends are similar, equal, and parallel rectilinear figures, and whose sides are parallelograms. Prism

A four-sided polygon. Quadrilateral

A straight line from the center to the circumference of a circle or sphere. Radius

A parallelogram with 90 degree angles. A square is also a rectangle. Rectangle

A triangle that has a 90 degree angle. Right Triangle

A regular polygon with four equal sides and four 90 degree angles. Square

The squared dimensions of the exterior surface Surface Area

A straight or curved line that intersects a circle or arc at one point only. Tangent

A polygon with three sides. Triangle

The amount of three-dimensional space occupied by an object or enclosed within a container. Volume

A four-sided polygon. Quadrilateral

- Type
- Crossword Puzzle

Polygons having the same shape. Two polygons whose corresponding angles are congruent and the lengths of the corresponding sides are proportional. SIMILAR POLYGONS

Space occupied by a solid; measured in cubic inches. VOLUME

3-D figure with faces(sides) that are polygons. A solid figure with many plane faces, typically more than six. POLYHEDRON

Parts of congruent figures that match or are in the same places as each other. The parts (angles or sides) are in the same relative position in each of the figures. CORRESPONDING PARTS

Using properties of similar polygons to find lengths that are difficult to measure directly. A method of using proportions to find an unknown length or distance in similar figure. INDIRECT MEASUREMENT

Applying more than one transformation to an image. A transformation is put on the previous image several times. COMPOSITION OF TRANSFORMATIONS

Shapes that have the same shape but different sizes,~. Having corresponding sides proportional and corresponding angles equal. SIMILAR

A 3-D figure with all points the same distance from the center. A round solid figure, or its surface, with every point on its surface equidistant from its center. SPHERE

3-D figure with two parallel congruent circles. Connected by a curved circle. A solid geometric figure with straight parallel sides and a circular or oval cross section. CYLINDER

3-D figure with one circle base connected by a curved surface to a single vertex. A solid or hollow object that tapers from a circular or roughly circular base to a point. CONE

Objects made up of more than one solid. A solid that is composed, or made up of, two or more solids. COMPOSITE SOLIDS

Longest side of a right triangle; always across or opposite from right angle. HYPOTENUSE

Reversing the Pathagorean Theorem; Switching the hypotenuse and conclusion of a conditional statement. CONVERSE

Has three angles and three sides; has a sum of 180 degrees. TRIANGLE

Simply closed figure with three or more sides. POLYGON

Angles of a triangle that are not adjacent to a given exterior angle. REMOTE INTERIOR ANGLES

Operation that maps an original geometric figure to a now figure. A general term for four specific ways to change the shape on a graph. TRANSFORMATION

Fixed point or point that doesn't change in a rotation. POINT OF ROTATION

Intersecting line making a right angle. Two lines that meet a pet a right angle. PERPENDICULAR LINES

Outside the parallel's but opposite of the transversal; congruent. ALTERNATE EXTERIOR ANGLES

- Type
- Crossword Puzzle

a plane figure with ten straight sides and angles. decagon

a part of a figure cut off by a line or plane intersecting it, in particular. segment

both parts have the same truth value biconditional

statements that are assumed to be true without proof proof

line that cuts across two or more (usually parallel) lines. ... It cuts across the parallel lines PQ and RS. If it crosses the parallel lines at right angles transversal

add up to 180 supplementary

When three or more points lie on a straight line. collinear

one shape becomes exactly like another if you flip, slide or turn it. symmetry

A 4-sided flat shape with straight sides where: • all sides have equal length, and • every interior angle is a right angle (90°) square

A ray is part of a line, has one fixed endpoint, and extends infinitely along the line from the endpoint. ray

an if-then statement in which p is a hypothesis and q is a conclusion. conditional

t angles are two angles that have a common vertex and a common side adjacent

A 3-sided polygon triangle

line that extends from one vertex of a triangle perpendicular to the opposite side. altitude

A 9-sided polygon nonagon

Switching the hypothesis and conclusion of a conditional statement. converse

A point where two or more straight lines meet vertex

add up to 90 complementary

A set of points, lines, line segments, rays or any other geometrical shapes that lie on the same plane coplanar

A circular movement rotation

A 4-sided flat shape with straight sides where all interior angles are right angles (90°). rectangle

s straight (no curves), • has no thickness, and • extends in both directions without end infinitely line

circumference. perimeter

"then" part of a conditional statement. conclusion

any 2-dimensional shape formed with straight lines. polygon

7-sided polygon or 7-gon. heptagon

longest side hypotenuse

prove the boundaries of possible theorems. counterexample

Sliding translation

The length of the opposite side divided by the length of the adjacent side. tangent

A shape, formed by two lines or rays diverging from a common point angle

four sides all have the same length. rhombus

statement formed by interchanging theorem

A triangle with all sides of different lengths. scalene

- Type
- Crossword Puzzle

branch of mathematics that deals with points, lines, planes, and solids and examines their properties geometry

has no size, length, width, or height. represented by a dot and named by a capital letter point

set of all points space

points that lie on the same line collinear points

points that lie on the same plane coplaner points

line that consists of two points and all points between them segment

the part of a line that contains an endpoint and all other points extending in the other direction ray

things measuring to the same size or length congruent

a point that divides a segment into two congruent parts midpoint

angle whose measure is between 0 and 90 degrees acute angle

an angle that measures 90 degrees right angle

an angle whose measure is greater than 90 but less than 180 degrees obtuse angle

an angle whose measure is 180 degrees straight angle

triangle with no sides congruent scalene

triangle that has a right angle included right triangle

two angles whose sum is 90 degrees complementary

two angles whose measures sum up to 180 degrees supplementary

line that intersects a circle in two points secant

segment that connects two ponts on a circle chord

comparison of two numbers by divison ratio

congruent polygons lying in parallel planes bases

equation that sates two ratios are equal proportion

parellelogram with consecutive sides congruent rhombus

four sided figure with all sides congruent square

a line segment with two points on a cirlce that passes through the center diameter

- Type
- Crossword Puzzle

a figure resulting from a transformation. image

a transformation in the plane that preserves distance and angle measure. rigid motion

the original image before transformation. pre-image

a symbol used to distinguish one quantity x' ("x prime") from another x. Prime marks are most commonly used to denote transformed coordinates. prime

the act of changing the position of a shape on a coordinate plane. transformations

a transformation that "slides" each point of a figure the same distance in the same direction. translation

a transformation that "flips" a figure over a mirror or reflection line. reflection

a transformation where you "turn" a figure about a given point. rotation

one shape becomes exactly like another when you move it in some way: turn, flip or slide. symmetry

having exactly the same size and shape. congruent

a line that a figure is flipped across to create a mirror image of the original figure. line of reflection

a fixed point around which shapes move in a circular motion to a new position. center of rotation

a point where two or more straight lines meet. vertex

lines in the same plane that do not intersect. parallel lines

two lines that intersect to form a right angle. perpendicular lines

plane figure having four sides and four angles. quadrilateral

a plane figure with at least three straight sides and angles, and typically five or more. polygon

when all angles are equal and all sides are equal (otherwise it is "irregular"). regular polygon

a transformation that stretches or shrinks a figure to create a similar figure. dialation

the way an object is 'pointing' or angled. orientation