IXL | Solve problems involving angle measures

Angie takes her younger brother and sister to the playground. The first toy they play with is the seesaw. They take turns pushing off the ground, making each seat rise and fall with a bounce.

Find the unknown angle measure,

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Learn with an example

question

Leah's little brother loves to play with toy cars. Leah used sidewalk chalk to draw roads for him to play on. Her brother drives one car down Main Street until it comes to a three-way fork in the road, where it can continue straight down Main Street or turn onto Tiny Tire Turnpike or Mini Motorway.

Find the unknown angle measure,

key idea

A straight angle has a measure of

180

solution

Main Street is a straight angle. This means the measure of the

angle, the measure of the

angle, and the unknown angle measure,

add up to

180

To solve for

subtract

and

from

180

–

123

–

The unknown angle measure,

Looking for more? Try these:

Lesson: Adjacent angles

Lesson: Types of angles

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Teacher tools

Work it out

Not feeling ready yet? These can help:

KK.10Angle measures: word problems

Lesson: Adjacent angles

Lesson: Types of angles

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