SOLUTION: A quadrilateral has four angles and angle AB ll to Angle CD and Angle A:B is2:7& C:D is 3:8 find all Angle

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Question 1098035: A quadrilateral has four angles and angle AB ll to Angle CD and Angle A:B is2:7& C:D is 3:8 find all Angle
Found 2 solutions by ikleyn, josgarithmetic:
Answer by ikleyn(52800) About Me  (Show Source):
You can put this solution on YOUR website!
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Hey,
angles are NEVER denoted by two letters as you do.

Only by 3 letters or by one single letter.


Reading your post, I do not understand what do you mean ?


Did you study Geometry ?
This info is the basis the student learn in first lessons . . .



Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
A better restatement of the exercise is this:

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Quadrilateral ABCD has side AB parallel to side CD, and ratio of interior angle at A to that at B is 2:7, and the ratio of interior angle at C to that at D is 3:8.
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The given information that AB is parallel to CD makes possible finding four equations.

system%28A%2BD=180%2CB%2BC=180%2CA%2FB=2%2F7%2CC%2FD=3%2F8%29------four unknowns, four equations. I leave the rest to you.
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system%28D=144%2Adegrees%2CA=36%2Adegrees%2CB=126%2Adegrees%2CC=54%2Adegrees%29.