Geometry Crossword

two line segments which cross to form 90 degree angles
a 90 degree angle
a triangle with all sides equal and all angles equal
a triangle having three unequal sides and angles
the intersection point of two sides of a plane figure
a triangle with one internal angle equal to 90 degrees
a polygon with 5 sides and 5 angles
a rectangle having all four sides of equal length
line segments that cross each other
an angle less than 90 degrees but greater than 0 degrees
a straight line extending from the center of a circle or sphere to the circumference or surface
one part of a line
a continuous extent of length
a quadrilateral having both pairs of opposite sides parallel to each other
line segments that do not intersect
a straight line passing through the center of a circle or sphere and meeting the circumference or surface at each end
a polygon having six sides and six angles
a closed plane curve consisting of all points at a given distance from a point within it called the center
Two figures are congruent if all corresponding lengths are the same, and if all corresponding angles have the same measure. Colloquially, we say they "are the same size and shape," though they may have different orientation. (One might be rotated or flipped compared to the other.)
The midline theorem states that a midline of a triangle creates a segment that is parallel to the base and half as long.