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For more information, please see full course syllabus of GRE/ACT/PSAT Math
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Lecture Comments (1)

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Post by Mena Jirjees on February 5, 2015

How do uk the measurement of each separate angle in the shapes u demonstrated ?


Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

  • Intro 0:00
  • The Basics: Angles 0:09
  • Classifying Angles 1:40
    • Acute Angles
    • Right Angles
    • Obtuse Angles
    • Straight Angles
  • Angle Relationships 4:13
    • Complementary Angles
    • Supplementary Angles
    • Bisected Angles
  • Angles at Intersections 7:14
  • Parallel Lines and Angles 9:50
    • Drawing Two Intersections to Determine Equal Angles
    • Angle Rules
  • Shapes and Angles 14:48
    • Angles in a Triangle
    • Angles in a Quadrilateral
    • Determining the Number of Angles is Larger Shapes