A two-dimensional pattern that you can fold to form a three-dimensional figure.
An accepted statement of fact.
Two collinear rays with the same endpoint and form a line.
If then statement.
When a conditional and its converse are true, you can combine them as a true _____ .
A line that intersects two coplanar lines at two distinct points.
y - y1= m(x - x1)
Corresponding parts of congruent triangles are congruent.
The side opposite the right angle in a right triangle.
The point of concurrency of the angle bisectors of a triangle.
The point of concurrency of the perpendicular bisectors of a triangle.
The point of concurrency of the medians of a triangle.
Perpendicular segment from a vertex to the line containing the opposite side in a triangle.
The lines containing the altitudes of a triangle are concurrent at the ____ of a triangle.
Angles of a polygon that share a side.
The ________ of a trapezoid is the segment that joins the midpoints of the nonparallel opposite sides.
A comparison of two quantities.
Two polygons are _____ if (1) corresponding angles are congruent and (2) corresponding sides are proportional.
____ = opp/adj
____ = opp/hyp
____ = adj/hyp
A ____ of a geometric figure is a change in its position, shape, or size.
A transformation whose preimage and image are similar.
The ____ of a trapezoid is the perpendicular distance between the bases.
The perpendicular distance from the center to the side.
An angle whose vertex is the center of a circle.
A segment passing through the center with endpoints on the sphere.
A _____ to a circle is a line in the plane of the circle that intersects the circle at exactly one point.
A line that intersects a circle at two points.
( x− h) 2 + ( y − k )2 = r2
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