3 years ago

if two angles of a triangle have measures of 42 degrees and 20 degrees what is the measure of the third

1 answer:

3 0

Every triangle has an angle measure of 180 degrees.

so 42+20+x (where x is the measure of the third angle)=180

Combine like terms.

62+x=180

Subtract 62 from both sides

x=118.

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