Question

5. Find the value of unknown angles.
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Answer 1

Answer:

x+x+40=180

2x+40=180

2x=180-40

2x=140

x=140/2

x=70

again x+y=180

so, y=180-x=180-70=110

Answer 2

Answer:

2x + 40 = 180

x= 70

40 + x equal y

y= 110