What is the answer to this question?

This is a Quadrilateral.

Step-by-step explanation:

A quadrilateral is the name mathematicians use to classify 4 sided polygons

we know that

applying the law of sines

°

so

∠j=18°

∠k=29°

∠l=180-(18+29)=133°

the answer part a) is

the measure of angle k is  ≈29°

part b)  the measure of angle k could also be

(180-29)=151°

so

∠j=18°

∠k=151°

∠l=180-(18+151)=11°

the answer part b) is

the measure of angle k could also be 151°

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yes the total will be same because in both of them the expression.is rearranged but their sign remains the same hence it hss just been shuffled