Question

If m1 + m3 = 154°, what is m2

A)26°


B)156°


C)116°


D)29°

Answer 1

we are given that

In Traingle If m1 + m3 = 154°, what is the value of the angle m2.

As we know that sum of angles of a triangle is 180 degree.

Here the sum of the two angles are 154°. So we can find the third angle by subtracting the given sum from 180 degree.

Hence we can write

`m_1+m_2+m_3=180^o\\ \\ 154^o+m_3=180^o\\ \\ m_3=180^o-154^o\\ \\ m_3=26^o\\`

Hence the correct option is A.