9.08 Angles at a point

Lesson

Practice

Lesson

Are you ready?

Can you find a missing angle if you know the total? Let's try this problem to practice.

Find the size of the missing angle.

$=$= $\editable{}$$^\circ$°

Learn

Angles at a point make up a full turn, which is $360$360 degrees.

This video looks at angles at a point and how to use the measure of a full turn to solve problems.

Vocabulary:

A revolution is a full turn.

Apply

Find the size of the missing angle.

$=$= $\editable{}$$^\circ$°

Remember!

It doesn't matter how many angles are formed at a point, the sum is always $360$360 degrees.

Outcomes

4.MD.C.7

Recognize angle measure as additive. When an angle is decomposed into non-overlapping parts, the angle measure of the whole is the sum of the angle measures of the parts. Solve addition and subtraction problems to find unknown angles on a diagram in real world and mathematical problems, e.g. By using an equation with a symbol for the unknown angle measure.