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olga_2 [115]
4 years ago
15

How I can know b, c, and d?

Mathematics
2 answers:
Anna71 [15]4 years ago
8 0

Answer:

b=120

c=60

d=60

Step-by-step explanation:

here,a=120 (given)

1) a=b (vertically opposite angles are equal)

so, b=120

2) b+c=180 (sum of angles in straight line is 180)

120+c=180

c=180-120

so, c=60

3) c=d (vertically opposite angles are equal)

so, d=60

Nostrana [21]4 years ago
3 0

Answer:

b=120

c=60

d=60

Step-by-step explanation:

Vertical angles are congruent . 180-120= 60. Sorry the explanation isn't that good.

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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