A triangle with at least two congruent sides.

A triangle with no congruent sides.

A triangle that contains one angle whose measure is 90 degrees.

A triangle that contains one angle whose measure is greater than 90 degrees.

A triangle that contains angles whose measures are all less than 90 degrees.

A triangle whose angles all have a measure of 60 degrees is an...

A point that divides a segment into two congruent segments.

A part of a line with two endpoints.

A set of points that lie on the same line.

A point, line, ray, or segment that divides a segment into two congruent segments.

Two angles with a common vertex and a shared side.

Two adjacent angles that form a straight line.

A pair of opposite congruent angles formed by two intersecting lines.

Two angles whose measures add up to 90 degrees.

Two angles whose measures add up to 180 degrees.

A ray that divides an angle into two congruent angles.

A segment, ray, line or plane that is perpendicular to a segment at its midpoint.

Fill in the blank: Perpendicular lines intersect at ____________ angles.

Fill in the blank: Parallel lines are coplanar lines that ____________ intersect.

Fill in the blanks: Slopes of parallel lines are __________ and slopes of perpendicular lines are ____________.

Two figures that have the same shape AND the same size.

Two figures that have the same shape but not necessarily the same size.

Check all that apply: Triangles can be proven congruent using:

A statement that has been proved, or can be proved.

A statement that is accepted as true without proof.

A statement that can be written in if-then form. If p, then q.

A statement where the hypothesis and conclusion are exchanged. If q, then p.

An example that proves that a conjecture or statement is false.

A segment from the a vertex of a triangle to the midpoint of the opposite side.

A segment from a vertex to the triangle that is perpendicular to the opposite side. It is also called "height."

The point of concurrency of the angle bisectors of a triangle.

A segment that connects the midpoint of two sides of a triangle. It is parallel to one side of the triangle.

Angles that lie on the same side of the transversal and in corresponding positions.

What does  $m$  and  $b$  stand for in $y=mx+b$ ? 

 $y-y_1=m\left(x-x_1\right)$  

Which symbol is used to denote "perpendicular"?

Process of creating geometric figures using only a compass and straightedge.

A numerical value from 0 to 1 that measures the likelihood of an event occuring.

A comparison of two numbers by division.

True or False: The sum of the lengths of two sides of a triangle must be greater than the length of the third side.