Answer :
Final answer:
In an isosceles triangle, the base angles are equal. Given that one base angle is 66 degrees, the other base angle also is 66 degrees.
Explanation:
The topic here is about geometry, specifically dealing with angles in an isosceles triangle. An isosceles triangle is a triangle with at least two sides of equal length. In this case, the two base angles are the ones that are equal. Since one base angle is given as 66 degrees, the other base angle must also be 66 degrees. The vertical angle (opposite the base) is not equal to the base angles. Therefore, the answer to your question is: c) 66 degrees.
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