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Easy, first you must assign a variable to the angle you are finding, x.

Then, if the angle is on a straight line then the total will be 180.



You should have one angle measument given, such as

An angle with x degrees and one with 72 lie on a straight line.

Then, all it is is x+72=180 which can be rewritten as 180-72=x so x must equal 108!

Same goes for to angles in a right angle, but replacing the 180 with 90.

Now if you are finding a missing angle measure in triangles all you do is add the given measures and subtract from 180 to get the missing measur, x.

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14y ago
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Q: How do you solve angle measures using algebra?
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