Geometry- Index
Placement Test
Unit 1

Rectangular Coordinates and Graphing Linear Equations

Unit 2

Angles and Similar Triangles

Unit 3

Perimeter and Area of Polygons

Unit 4

Pythagorean Theorem, Circumference, Area of Circles, Solid Geometry

Unit 2: Angles and Similar Triangles

  • Introduction to Angles and Similar Triangles01:30
  • 22Angle Measurements01:58
  • 23Lines and Angles02:56
  • 24Angles02:42
  • 25Angles01:52
  • 26Measuring Angles with a Protractor02:05
  • 27Intersecting Lines and their Angles03:33
  • 29Parallel Lines05:02
  • 31The Sum of Interior Angles of a Triangles01:22
  • 33Types of Triangles03:41
  • 36Geometry-Similar Triangles03:47
Geometry-The Sum of Interior Angles of a Triangle

Visual demonstration of angles: the sum of the interior angles of any triangle always equals 180 degrees. If one knows 2 of the angles, one can always determine the 3rd angle.