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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, \(m\angle ACD = (7x -27)^\circ, \; m\angle ECB = (8x -44)^\circ\). What is the value of \(x\)?
    C
    $$A$$
    $$B$$
    $$D$$
    $$E$$
    qid: 100094

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