Perpendicular and Angle Bisectors

Front

What is a perpendicular bisector?

Back

A line that divides a segment into two equal parts at a 90-degree angle.

Front

What is an angle bisector?

Back

A ray that divides an angle into two congruent angles.

Front

If DF is the perpendicular bisector of CE, what can be said about segments CD and DE?

Back

CD = DE.

Front

What is the relationship between angles formed by perpendicular lines?

Back

They form right angles (90 degrees).

Front

How do you prove triangles are congruent using ASA?

Back

You need two angles and the included side to be equal.

Front

If m∠A = 50° and m∠B = 50°, what can be said about ∠A and ∠B?

Back

They are congruent angles.

Front

What is the sum of the angles in a triangle?

Back

180 degrees.

Front

If two angles are complementary, what is their sum?

Back

90 degrees.

Front

What is the definition of congruent figures?

Back

Figures that have the same shape and size.

Front

If CD = 12 and EF = 5, what is the perimeter of ACDE if DF is the perpendicular bisector?

Back

30.