WILL MARK BRAINLIEST TO THE BEST ANSWERS. The interior angles of a pentagon measure x°, (2x)°, (2.5x)° , (x + 10)° , and (2x + 2
0)°. Determine the value of x. PLEASE SHOW ALL SOLUTIONS NESSICARY. THANK YOU.......
2 answers:
Answer:
Step-by-step explanation:
<u>Sum of interior angles of a regular polygon is: </u>
<u>Pentagon has 5 sides, so sum of angles is: </u>
- 180°(5-2) = 180°*3 = 540°
<u>For the given pentagon we have sum of angle measures as below, and solving for x:</u>
- x + 2x + 2.5x + (x +10) + (2x + 20) = 540°
- 8.5x + 30° = 540°
- 8.5x = 510°
- x = 510°/8.5
- x = 60°
Answer:
x=60
Step-by-step explanation:
The sum of interior angles of a regular Pentagon is 540°
x+2x+2.5x+x+10+2x+20=540
8.5x=540-30
8.5x=510
x=510/8.5=60
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I think it would be (D. 88)
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C I guess I was learning this in class but I'm not sure.
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Z is 66. If you want an explanation, I could give it to you, FYI.
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