IXL | Angle measures: word problems

Two angles join to form a

120

angle. The first angle measures

What is the measure of the second angle?

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Learn with an example

Two angles join to form a straight angle. The first angle measures

What is the measure of the second angle?

The measure of a straight angle is

180

angle joins with a second angle. Together, they form a straight angle. So, their measures add up to

180

Subtract to find the measure of the second angle.

180

–

The measure of the second angle is

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