# In triangle ABC, angle A is 50%, angle B is 75%. Calculate the degree measure of angle C.

September 29, 2021 | education

| From the condition we know that in triangle ABC the angle A is 50 °, the angle B is 75 °. In order to calculate the degree measure of the angle C, let’s recall and apply the theorem on the sum of the angles of a triangle.

Let’s remember her first. The theorem on the sum of the angles of a triangle says that the sum of the angles of a triangle is 180 °.

We know the degree measure of two angles. In order to find the third, subtract from 180 ° the sum of the two known angles of the triangle.

180 ° – (50 ° + 75 °) = 180 ° – 125 ° = 55 °.

Answer: 55 ° is the degree measure of the angle C.

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