Question

the diagram shows $\triangle jkl$ and $\overrightarrow{km}$.
what is the measure of $\angle jlm$?
\boxed{}^\circ

Explanation:

Step1: Find ∠JKL's exterior angle

The exterior angle of a triangle equals the sum of the two non-adjacent interior angles.
$\angle JLM = \angle KJL + \angle JKL$

Step2: Substitute given angle values

Plug in $\angle KJL=68^\circ$ and $\angle JKL=55^\circ$.
$\angle JLM = 68^\circ + 55^\circ$

Step3: Calculate the sum

Add the two angle measures.
$\angle JLM = 123^\circ$

Answer:

$123$