Asked by nicole

The sum of the angles of a triangle is 180 degrees. If one angle measures x degrees, a second angle measures 3x degrees, and a third angle measures 7x degrees, express the measure of the fourth angle in terms of x.
Answered by Ms. Sue
Fourth angle in a TRIangle?

Answered by nicole
Sorry, express the measure the third angle in terms of x**

I don't know why I typed "fourth".
Answered by Ms. Sue
x + 3x + 7x = 180
11x = 180
x = 16.3636

7 * 16.3636 = about 114.545 degrees

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