Properties of Triangles-Review

Front

What is a line, ray, or segment that bisects the side of a triangle and is perpendicular to it?

Back

Perpendicular bisector.

Front

Can the numbers 9, 9, and 6 be the measures of the sides of a triangle?

Back

Yes.

Front

If NP is 9, how long is side DE?

Back

18.

Front

Which midsegment is parallel to side ED?

Back

Midsegment NP.

Front

If m∠1 = 58°, what is the measure of ∠CAB?

Back

116°.

Front

What is the definition of a triangle?

Back

A polygon with three edges and three vertices.

Front

What is the sum of the interior angles of a triangle?

Back

180°.

Front

What is an angle bisector?

Back

A line that divides an angle into two equal angles.

Front

What is a median in a triangle?

Back

A line segment joining a vertex to the midpoint of the opposite side.

Front

What is an altitude in a triangle?

Back

A perpendicular segment from a vertex to the line containing the opposite side.