Geometry vocabulary and construction review

Front

What is a perpendicular bisector?

Back

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

Front

What is a right angle?

Back

An angle that measures exactly 90°.

Front

How do you construct a perpendicular bisector?

Back

1. Place the compass point on one endpoint of the segment. 2. Draw arcs above and below the segment. 3. Without changing the compass width, repeat from the other endpoint. 4. Draw a line through the intersection points of the arcs.

Front

What is an acute angle?

Back

An angle that measures less than 90°.

Front

What is a straight angle?

Back

An angle that measures exactly 180°.

Front

What is an angle bisector?

Back

A ray that divides an angle into two equal angles.

Front

What does it mean for two lines to be parallel?

Back

Two lines that never intersect and are always the same distance apart.

Front

What is the definition of congruent angles?

Back

Angles that have the same measure.

Front

What is the difference between a line and a line segment?

Back

A line extends infinitely in both directions, while a line segment has two endpoints.

Front

What is a triangle?

Back

A polygon with three edges and three vertices.