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Romashka [77]
2 years ago
11

Please help me with this

Mathematics
1 answer:
PSYCHO15rus [73]2 years ago
6 0

Answer:

Step-by-step explanation:

Both angles added together = 180 degrees. They both have a straight line as their base.

So let <ABC = x

Then <CBD = 3x      Add the two angles

x + 3x = 180              Combine

4x = 180                    Divide by 4

4x/4 = 180/4

x = 45

So 3x = 3*45 = 135

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Answer:

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