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A side of the triangle below has been extended to form an exterior angle of 72°. Find the value of xx

A Side Of The Triangle Below Has Been Extended To Form An Exterior Angle Of 72 Find The Value Of Xx class=

Sagot :

x + 20 = 72

x + 20 - 20 = 72 - 20

x = 52

Answer:

x=52

Step-by-step explanation:

The exterior angle of the triangle is equal to the sum of the opposite interior angles

72 = 20+x

72-20 = 20+x-20

52 =x