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The angles of a quadrilateral measures 80 degrees 100 degrees 100 degrees in this order. What kind of quadrilateral has this shape? How do you know?
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The angles of a quadrilateral measures 80 degrees 100 degrees 100 degrees in this order. What kind of quadrilateral has this shape? How do you know?

User WizardZ
by
8.4k points

1 Answer

6 votes
A parallelogram

Because...
-opposite angles are congruent
-four sides
-angles must equal 360
100 + 100 +80 + y = 360

280 + y = 360

y = 80
-the angle we don't know is 80 degrees


User Annish
by
8.3k points
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