Answer:
AC = BC = 5 cm
∠A = 60°
Step-by-step explanation:
All of the points on a circular arc are the same distance from the center of the arc. This construction makes the radius of each arc be 5 cm, so point C is 5 cm from the arc centers: A and B. That is, ...
AC = 5 cm
BC = 5 cm
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A triangle with all sides the same length is an equilateral triangle. It is also an equiangular triangle, so all three angles have the same measure: 180°/3 = 60°.
∠A = 60°
