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A angles of an equilateral triangle are congruent. If x represents the measure of the third angle of the triangle, what is x?

A) x+x=90
B) x+x+x=90
C) x+x=180
D)x+x+x=180


Please help!!!

@..@

Respuesta :

Answer:

D

Step-by-step explanation:

Since x is the measure of the third angle and all 3 angles are congruent then

All 3 angles have a measure of x

The sum of the 3 angles in a triangle = 180°, this

x + x + x = 180 ← is the required equation

3x = 180 ( divide both sides by 3 )

x = 60

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