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Mathematics 19 Online
OpenStudy (becca9898):

Geometry help!! In an isosceles trapezoid, two angles are labeled as shown. What is the value of x? A. 20 B. 21 C. 22 D. 27

OpenStudy (becca9898):

ganeshie8 (ganeshie8):

since this is a trapezoid, there will be two parallel sides. take a look at the given picture which two sides seem parallel to you ?

OpenStudy (becca9898):

The top line and the bottom line look parallel to me

ganeshie8 (ganeshie8):

Yes, and notice that the given angles are the interior angles of a transversal cutting two parallel sides

ganeshie8 (ganeshie8):

so they must add up to 180

ganeshie8 (ganeshie8):

(4x - 8) + 100 = 180 you can solve x

OpenStudy (becca9898):

X would equal 22 then! Thank you so much!

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