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.

Question

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.

Ms. Sue · Answer

Fourth angle in a TRIangle?

nicole · Answer

Sorry, express the measure the third angle in terms of x** I don't know why I typed "fourth".

Ms. Sue · Answer

x + 3x + 7x = 180 11x = 180 x = 16.3636 7 * 16.3636 = about 114.545 degrees