Shelly and her friends would equal 5 people so you take 138.60 and divided by 5 your answer is 27.72
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Step-by-step explanation:
Answer:
360°
Step-by-step explanation:
Each of the two triangles have 3 angles that add up to 180°.
So,
180° + 180° = 360°
The sum of the angles of a quadrilateral is 360°
