Topics
9. Shapes and angles
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United States of America
Grade 4

9.07 Angles on a straight line

Lesson
Practice

Interactive practice questions

What is the total measure of angles on a straight line?

$90^\circ$90°

A

$180^\circ$180°

B
Easy
< 1min

Do the angles in the diagram add to $180^\circ$180°?

Easy
< 1min

Find the size of the missing angle.

Easy
< 1min

Find the size of the missing angle.

Easy
< 1min
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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.

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