Question

Find x in the following figures.
All three find...
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Answer 1

Answer:

i) 60⁰+x+20⁰+x-30⁰+x+40⁰= 360⁰

3x+90⁰ = 360⁰

3x = 360⁰-90⁰

3x = 270⁰

x = 90⁰

ii) x+25⁰+60⁰+3x-17 = 180⁰ (linear pair)

4x+68 = 180⁰

4x = 180⁰-68⁰

4x = 112⁰

x = 28⁰