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Paladinen [302]
3 years ago
13

Help please! Complete the proof!

Mathematics
1 answer:
Dmitry [639]3 years ago
5 0
Since CM is perpendicular to AB, it follows that ∠1 and <span>∠2 are 90 degrees.  Since they both have 90 degree angles, that must mean they are both right triangles.

And since </span>∠3 = ∠4 and ∠1 = ∠2, then it follows that ∠A = <span>∠B.  (You can show this by showing that they must add up to 180 degrees.)

So since both right triangles have 3 congruent angles to each, then that makes them similar by AAA (angle angle angle).</span>
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