Question

Find the value of x in each of the following​

Answer 1

Answer:

ans is 20

Step-by-step explanation:

i think it may be help u

Answer 2

the figure shown here is a pentagon

the sum of interior angles of a pentagon = n-2×180°

n is the number of sides

so the sum = 5-2×180

=3×180

=540°

lets name the pentagon as ABCDE

A=85°

B=120°

C= (180-x)° [because the angle lies on a straight line]

D=90°

E=( 2x -10)°

∴ ∠A + ∠B + ∠C + ∠D + ∠E =540°

i.e, 85 + 120+ 180-x + 90 + 2x-10 = 540

465 + x = 540

x = 540 - 465

x = 75

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