thedemongod thedemongod

02-12-2018
Mathematics

contestada

Determine which sides of quadrilateral ABCD must be parallel. If angle A is 72 degrees, angle B is 108 degrees, angle C is 72 degrees and angle D is 108 degrees.

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sqdancefan sqdancefan

13-12-2018

Answer:

AB║CD . . . and . . . AD║BC

Step-by-step explanation:

Adjacent vertices have supplementary angles. That means vertices A and B are adjacent, as are A and D. Sides connecting adjacent vertices are parallel to the sides connecting the opposite vertices. So, ...

... AB ║ CD

and

... AD ║ BC

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