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horrorfan [7]
3 years ago
11

Explain why a +b= d.​

Mathematics
1 answer:
joja [24]3 years ago
5 0

Answer:

see explanation

Step-by-step explanation:

a + b + c = 180 ( sum of angles in a triangle )

c + d = 180 ( adjacent angles are supplementary ), thus

a + b + c = c + d ( subtract c from both sides )

a + b = d

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3 years ago
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