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2 years ago

I really need help with this ... I hope someone can help!

Mathematics

1 answer:

viva [34]2 years ago

4 0

9514 1404 393

Answer:

∠B = 53°

∠C = 127°

∠D = 127°

Step-by-step explanation:

The trapezoid is isosceles, as indicated by the hash marks on sides AD and BC. This means it is symmetrical about the vertical center-line. Angles on the right will have the same measures as the symmetrical angles on the left.

So, you know immediately that ∠B = ∠A = 53°.

Because AB ║ DC, ∠A and ∠D are supplementary. That is, ...

∠D = ∠C = 180° -53°

∠D = ∠C = 127°

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