Answer:
A. 52 degrees
Explanation:
Two sides are equal, so the triangle is an isosceles triangle.
Both base angles are equal.
x = 52
52°
Since the side 52° is 10 and is congruent to the other side x° (also has 10), we know that the triangle is isosceles and that the 2 angles are congruent (by definition of an isosceles triangle). We could also use Law of Sines and Law of Cosines to prove this.
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