Geometry Grade 4

Front

What is the unit used to measure angles from 0 to 360 degrees?

Back

A degree.

Front

What are lines that cross at any angle called?

Back

Intersecting lines.

Front

What is the term for a line that divides a figure into two congruent (mirror image) parts?

Back

Symmetry.

Front

What is the maximum degree measurement for acute angles?

Back

Less than 90 degrees.

Front

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

Back

An obtuse angle.

Front

What is the term for angles that measure exactly 90 degrees?

Back

Right angles.

Front

What is the sum of the angles in a triangle?

Back

180 degrees.

Front

What type of angle measures less than 90 degrees?

Back

Acute angle.

Front

What is the term for angles that are equal in measure?

Back

Congruent angles.

Front

What do you call two angles that add up to 90 degrees?

Back

Complementary angles.