Geometry

Front

Angles that are exactly 90 degrees are called _____ ______.

Back

right angles

Front

What type of angle is this? (Image of an obtuse angle)

Back

Obtuse

Front

How many degrees are in a right angle?

Back

90

Front

What are lines that cross or meet to form a right angle?

Back

perpendicular lines

Front

Angles that have a measure less than 90 degrees are called _____ ______.

Back

acute angles

Front

What is the sum of angles in a triangle?

Back

180 degrees

Front

What do you call an angle that is greater than 90 degrees but less than 180 degrees?

Back

obtuse angle

Front

What type of lines never meet and are always the same distance apart?

Back

parallel lines

Front

What is a straight angle?

Back

An angle that measures exactly 180 degrees.

Front

What do you call an angle that measures less than 90 degrees?

Back

acute angle