Area of Inscribed Equilateral Triangle (Some Basic Trig Used)

Lecture Description

Area of Diagonal Generated Triangles of Rectangle are Equal.

Course Description

Videos on geometry. Basic understanding of Algebra I necessary. After this, you'll be ready for Trigonometry.

Course Index

1. Introduction to Angles
2. Angles Part 2
3. Angles Part 3
4. Angles Formed Between Transversals and Parallel Lines
5. Angles of Parallel Lines 2
6. The Angle Game
7. Similar Triangles
8. Similar Triangles 2
9. Area and Perimeter
10. Circles: Radius, Diameter, and Circumference
11. Area of a Circle
12. The Pythagorean Theorem
13. The Pythagorean Theorem II
14. 45-45-90 Triangles
15. Intro to 30-60-90 Triangles
16. 30-60-90 Triangles II
17. Heron's Formula
18. Part 1 of Proof of Heron's Formula
19. Part 2 of Proof of Heron's Formula
20. An Inscribed Angle is Half of a Central Angle that Subtends the Same Arc
21. Area of Inscribed Equilateral Triangle (Some Basic Trig Used) 2
22. Right Triangles Inscribed in Circles
23. Area of Inscribed Equilateral Triangle (Some Basic Trig Used)