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Angle Pairs

Understand complementary angles as angles whose sum is 90 degrees and supplementary angles as angles whose sum is 180 degrees.

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Geometry Definitions and Introduction to Proof
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    Algebra and Vertical Angles
    Teacher Contributed
    In the diagram below, mACD=(2x+50),mECB=(7x+30). What is the value of x?
    C
    A
    B
    D
    E
    qid: 100094
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