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dybincka [34]
3 years ago
7

Triangle ABC is inscribed in the circle, mA=50, and AB=BC. Find arch AC.

Mathematics
1 answer:
Karolina [17]3 years ago
3 0

The answer is C) 160.

We know this because if mA = 50, we know that mC must also be 50. This is due to the fact that AB = BC. This leaves us with mB as 80 since the angles of a triangle always have to equal 180.

Now knowing this, it is easy to find the arc lengths in degrees. When you have a transcribed triangle, all we are going to do here is double the angle of the triangle to get the arc measure.

mB = 80

80*2 = 160

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