# The outside angle at the apex of an isosceles triangle is 100 degrees. Find the angles of the triangle.

May 30, 2021 | education

| Determine what the internal angle will be at such an external angle:

180 – 100 = 80.

Determine what the remaining angle is equal to if the found angle at the base is:

180 – 2 * 80 = 20.

Answer: 2 at 80 ° and 20 °.

Determine what the remaining angles are equal to if the found angle is against the base:

(180 – 80): 2 = 50.

Answer: 2 at 50 ° and 80 °.

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