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How do you know <C is a right angle without using Pythagorean theorem?​

How do you know <C is a right angle without using Pythagorean theorem?​-example-1
User Ulana
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Answer:

please see answer below

Explanation:

6² + 8² = 36 + 64 = 100 = 10²

we could make the angle C as big or as small as we want to, but if AB is going to remain a length of 10, then C is 90°.

User Cengkuru Michael
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