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Help me Find the base angles of the figure below.

A) 130°
B) 65°
C) 25°
D) 50°

Help me Find the base angles of the figure below. A) 130° B) 65° C) 25° D) 50°-example-1
User John Goofy
by
8.3k points

1 Answer

3 votes

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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User Marius Kjeldahl
by
8.1k points

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