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2 years ago

Analyze the diagram below and complete the instructions that follow.

Mathematics

1 answer:

steposvetlana [31]2 years ago

5 0

Answer:

71°

Step-by-step explanation:

84+(2x-1)+(x+8)+(x+5)=360 [angles in a quadrilateral add to 360°]
4x+96=360 [combine like terms]
4x=264 [subtract 96 from both sides]
x=66 [divide both sides by 4]

So, angle A measures 66+5=71°

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