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What is the measurement of angle A? ​

What is the measurement of angle A? ​-example-1
User Six
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12 votes

Answer:

51

Explanation:

All triangles =180 degrees

180-78 = 102

Since this triangle is an isosceles triangle, that means that 2 sides are the same length, and that 2 angles are the same.

102/2 (you divide by 2 bc the angles unknown are the same measurement) and that equals 51 degrees

User Froyo
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