Angle Properties

Mr. Crosby's Class

Angle Properties Vocabulary

  • Congruent Angles

    • Alternate Interior- alternate sides of transversal and inside the parallel lines.

    • Alternate Exterior- alternate sides of transversal and outside the parallel lines.

    • Vertical- opposite angles "vertices touch"

    • Corresponding- one inside, one outside and on same side of transversal.

  • Supplementary Angles

    • Same Side Interior- same sides of transversal and inside the parallel lines.

    • Same Side Exterior- same sides of transversal and outside the parallel lines.

    • Linear- two angles adjacent on a straight line.

Angle Relationships help find missing values

  • Two angles that are congruent are the same size. Do you know the measurement or should you set up an equation?

    • Angles should be equal to each other in equation

  • Two angles that are supplementary add up to 180 degrees. If you have an angle measurement, then subtract from 180. If not, set up an equation.

    • One angle plus another angle equals 180 degrees.
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