3 years ago

Item 1

Mathematics

1 answer:

Nady [450]3 years ago

3 0

9514 1404 393

Answer:

∠1 = ∠3 = ∠5 = ∠7 = 81°

∠2 = ∠4 = ∠6 = 99°

Step-by-step explanation:

Vertical and corresponding angles are congruent. Angles 1 and 99° are supplementary, so ...

∠1 = 180° -99° = 81°

Then we have ...

∠1 = ∠3 = ∠5 = ∠7 = 81°

∠2 = ∠4 = ∠6 = 99°

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