Geometry › Trapezoid angles

Teacher info
Supplementary pairs of angles in trapezoids
CCSS.MATH.CONTENT.7.G.B.5
Use facts about supplementary, complementary, vertical, and adjacent angles in a multi-step problem to write and solve simple equations for an unknown angle in a figure.

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https://schoolyourself.org/page/lti/sy/geometry/trapezoid-angles
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