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What is the
value of X?
140°


What Is The Value Of X 140 class=

Sagot :

Step-by-step explanation:

y=ax

70=a(140)

a = 70/140 = 1/2

y= x/2

y=45/2 = 22.5

The two blue angles are equal and two yellow angle are equal because of equal sides.

140 + blue angle = 180 ( linear pair )

hence, blue angle = 40

now, the sum of two yellow angles is 40 because of ext angle property.

hence, x + x = 40

2x=40

x = 20