# Course - Geometry

Course Level: High School

Videos on geometry. Basic understanding of Algebra I necessary.

• Lecture 1 - Introduction to angles
• Lecture 2 - Angles (part 2)
• Lecture 3 - Angles (part 3)
• Lecture 4 - Angles formed between transversals and parralel lines
• Lecture 5 - Angles of parallel lines 2
• Lecture 6 - The Angle Game
• Lecture 7 - Similar triangles
• Lecture 8 - Similar triangles (part 2)
• Lecture 9 - Angle Game (part 2)
• Lecture 10 - Area and Perimeter
• Lecture 11 - Circles_ Radius, Diameter and Circumference
• Lecture 12 - Area of a circle
• Lecture 13 - The Pythagorean Theorem
• Lecture 14 - Pythagorean Theorem II
• Lecture 15 - 45-45-90 Triangles
• Lecture 16 - Intro to 30-60-90 Triangles
• Lecture 17 - 30-60-90 Triangles II
• Lecture 18 - Heron's Formula
• Lecture 19 - Part 1 of Proof of Heron's Formula
• Lecture 20 - Part 2 of the Proof of Heron's Formula
• Lecture 21 - An inscribed angle is half of a central angle that subtends the same arc
• Lecture 22 - Area of Inscribed Equilateral Triangle (some basic trig used)
• Lecture 23 - Right Triangles Inscribed in Circles (Proof)
• Lecture 24 - Area of Diagonal Generated Triangles of Rectangle are Equal