Perpendicular and Angle Bisectors

Front

What is a perpendicular bisector?

Back

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

Front

What does an angle bisector do?

Back

It divides an angle into two equal angles.

Front

If a line segment is 12 units long, what is the length of each half when bisected?

Back

6 units.

Front

Back

6.

Front

What is the relationship between perpendicular lines?

Back

They intersect at a right angle (90 degrees).

Front

What is the measure of an angle bisector in a triangle?

Back

It creates two angles that are equal in measure.

Front

If angle A measures 40 degrees, what is the measure of each angle created by the angle bisector?

Back

20 degrees.

Front

What is the definition of a segment bisector?

Back

A point, line, or plane that intersects a segment at its midpoint.

Front

Back

8 units.

Front

What is the formula for finding the midpoint of a segment with endpoints (x1, y1) and (x2, y2)?

Back

Midpoint = ((x1 + x2)/2, (y1 + y2)/2).