Measuring Angles and Find the Missing Angle

Front

What is an angle?

Back

An angle is formed by two rays (sides) that share a common endpoint (vertex).

Front

What is the vertex of an angle?

Back

The vertex is the point where the two rays of an angle meet.

Front

What are the different types of angles?

Back

Types of angles include acute (less than 90°), right (exactly 90°), obtuse (greater than 90° but less than 180°), and straight (exactly 180°).

Tags

CCSS.4.G.A.1

Front

What is a right angle?

Back

A right angle measures exactly 90 degrees.

Tags

CCSS.4.G.A.1

Front

How do you measure an angle?

Back

Angles are measured in degrees using a protractor.

Tags

CCSS.4.MD.C.6

Front

What is a protractor?

Back

A protractor is a tool used to measure angles in degrees.

Tags

CCSS.4.MD.C.6

Front

What is the sum of angles in a triangle?

Back

The sum of the angles in a triangle is always 180 degrees.

Tags

CCSS.8.G.A.5

Front

If one angle in a triangle is 90 degrees, what are the other two angles?

Back

The other two angles must add up to 90 degrees.

Tags

CCSS.8.G.A.5

Front

What is a complementary angle?

Back

Complementary angles are two angles that add up to 90 degrees.

Tags

CCSS.7.G.B.5

Front

What is a supplementary angle?

Back

Supplementary angles are two angles that add up to 180 degrees.

Tags

CCSS.7.G.B.5