Angles and Triangles

Front

What is the measurement of a right angle?

Back

90 degrees

Front

How many acute angles must an acute triangle have?

Back

3 acute angles

Front

What kind of triangle has all angles less than 90 degrees?

Back

Acute triangle

Front

Which of the following is an acute angle? (Provide an example)

Back

An angle measuring less than 90 degrees, e.g., 45 degrees.

Front

What are intersecting lines?

Back

Lines that pass through the same point.

Front

What is an obtuse angle?

Back

An angle that measures more than 90 degrees but less than 180 degrees.

Front

What is a triangle?

Back

A polygon with three edges and three vertices.

Front

What is the sum of the angles in a triangle?

Back

180 degrees.

Front

What is a right triangle?

Back

A triangle that has one right angle (90 degrees).

Front

What is a scalene triangle?

Back

A triangle with all sides of different lengths.