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mamaluj [8]
3 years ago
5

How to find value of y in polygon JKLM

Mathematics
1 answer:
Yuki888 [10]3 years ago
4 0

Answer:

y = 22.5


Step-by-step explanation:

Here, the 4 angles shown are all exterior angles of the polygon.

The sum of the exterior angles of a polygon is ALWAYS 360°


<em>So we add up the 4 angles (given in terms of y) and sum it to 360 and solve for y:</em>

4y+2y+6y+4y=360\\16y=360\\y=\frac{360}{16}=22.5


y = 22.5


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sp2606 [1]
Hey there!

A quadrilateral has 360 degrees. So add all the degrees together to 360. 9x+1+5x-12+8x+61+90=360. 90 degrees is in the bottom left corner. Combine like terms. 22x+140=360. Subtract 140 from each side. 22x=220. Divide 22 on each side to get x=10. Plug in 10 for x in angle D. 5(10)-12=38. The measure of angle D is 38 degrees.

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A test consists of 100 multiple choice questions, each with five possible answers, only one of which is correct. Find the mean a
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Step-by-step explanation:

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