Angles and Triangles Flashcard

Front

What is the size of a right angle?

Back

90°

Front

An obtuse angle is greater than a right angle.

Back

True

Front

Which of the following is an acute angle? Options: 91°, 120°, 30°, 180°

Back

30°

Front

A straight angle measures 180 degrees.

Back

True

Front

What type of angle is exactly 90 degrees?

Back

Right

Front

Which angle is reflex? Options: 50°, 135°, 250°, 90°

Back

250°

Front

Is a reflex angle smaller than an obtuse angle?

Back

False

Front

A triangle has one angle of 90°. What is the triangle called?

Back

Right triangle

Front

The angles in a triangle always add up to 180°.

Back

True

Front

Alex draws an angle that measures 45 degrees. What type of angle did he draw?

Back

An acute angle.