Question

find the value of
"x"

​

Answer 1

Answer:

1) 140⁰ = x + 90⁰ (exterior angle property)

x = 140⁰-90⁰

x = 50⁰

2) 2a + 7a = 180⁰(linear pair)

9a = 180⁰

a = 20⁰

5a = 5×20 = 100⁰

2a = 2×20 = 40⁰

angle sum property of triangle

x + 100⁰ + 40⁰ = 180⁰

x + 140⁰ = 180⁰

x = 180⁰-140⁰

x = 40⁰

Answer 2

hope it helps...!

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