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Zanzabum
3 years ago
13

Please help me ASAP!!!

Mathematics
1 answer:
Paha777 [63]3 years ago
3 0

Answer:

A 70

Step-by-step explanation:

We know that angle B and angle C are equal because this is an isosceles triangle and the angles at the base of the equal sides are equal.

The three angles of a triangle add to 180 degrees

A + B+ C = 180

40 + C + C = 180    since B = C

Combine like terms

40 + 2C = 180

Subtract 40 from each side

40-40 + 2C = 180-40

2C = 140

Divide by 2

2C /2 =140/2

C = 70

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