Answer:
C) 25°
Explanation:
You want the base angles in an isosceles triangle with vertex angle 130°.
Base angles
The base angles of an isosceles triangle are congruent. If each is represented by 'b', then the sum of angles in the triangle is ...
2b +130° = 180°
2b = 50° . . . . . . . . subtract 130°
b = 25° . . . . . . . divide by 2
The base angles of the triangle are 25°, choice C.
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