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Two angles of a triangle measure 55° and 20°.
What is the measure of the third angle of the triangle?
A. 159
B. 90°
O C. 1050
D. 2859
HELP

Two angles of a triangle measure 55 and 20 What is the measure of the third angle of the triangle A 159 B 90 O C 1050 D 2859 HELP class=

Respuesta :

Answer:

The three angles of a triangle always add up to 180.

Therefore, we have the equation:

55+20+x=180.

Solving for x, we get x=105.

So the answer is C.

Hope this helps! :D
180 because three angles of a triangle always add up to 180