Question

in the figure below, m∠1 = 49° and m∠2 = 87°. find m∠abc.

Explanation:

Step1: Identify angle - addition relationship

$\angle ABC=\angle 1+\angle 2$

Step2: Substitute given angle measures

$m\angle ABC = 49^{\circ}+87^{\circ}$

Step3: Calculate the sum

$m\angle ABC=136^{\circ}$

Answer:

$136$