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Geometry

This review session covers the properties of parallelograms and the angle sums of polygons. Get prepared for the quiz on Wednesday!

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Geometry

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  1. Geometry January 31, 2017 6.1-3 QUIZ REVIEW

  2. DO NOW Solve for x: • 4x + 40 + 3x = 180 • 6x – 50 = 4x + 30 • 5x – 6 = 2x • x + 55 + 2x – 15 = 180

  3. Announcement QUIZ WEDNESDAYOn 6.1, 6.2, 6.3

  4. Today’s Objectives • Review and apply basic properties of parallelograms • Review Polygon Angle Sum Theorem and Exterior Angle Sum Theorem

  5. Review: Parallelogram Definition: A quadrilateral with two pairs of parallel sides.

  6. Review: Properties/tests of a parallelogram • Both pairs of opposite sides are congruent. • Both pairs of opposite angles are congruent. • Consecutive pairs of angles are supplementary. • The diagonals bisect each other. • One pair of sides is parallel and congruent.

  7. Properties 1-3

  8. Properties 4-5

  9. Practice

  10. Review: Polygon Angle Sum Theorem The sum of the interior angles: Each interior angle of a regular polygon:

  11. Review: Exterior Angle Sum Theorem The sum of the exterior angles: Each exterior angle of a regular polygon:

  12. Practice

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