4:06
Extended Law of Sines and Circumradius
Mr. T's Math Videos
2:36
Area of a Triangle and Radius of its Circumscribed Circle
4:35
Radius of an Excircle and Area of the Triangle
3:45
Finding the Circumradius Given Side Lengths
2:38
The Connection of the Excircle and Semi-perimeter of a Triangle
3:28
The Existence of the Excenter
3:52
Problem: Isosceles Triangle Inscribed in a Circle
6:02
Problem: Circles Inscribed in Right Triangles
3:39
Mass Points Example with Angle Bisectors
3:20
Mass Points Example - Basic
5:41
Radii of Inscribed and Circumscribed Sphers in a Regular Tetrahedron
4:33
Height and Volume of a Regular Tetrahedron
5:23
Proof of Stewarts Theorem
4:09
Exact Value of sin (18) and sin (54)
6:56
Diagonal Relationships in a Regular Pentagon
4:37
Exradii of a Triagle and the Area of the Triangle
4:03
Splitting Masses
5:24
Example: Mass Points and Area on Non concurrent Cevians
4:17
Example: Intermediate Mass Points
6:27
Example: Mass Points and Area
5:40
Ceva's Theorem
5:05
Ptolemys Theorem
2:28
Example: Using Menelaus to Prove Points Collinear
4:43
Menelaus Theorem
3:13
Direct Application of Ceva's Theorem
Example: Existence of the Nagel Point
Basic Properties of Cyclic Quadrilaterals
Mass Point Example With Stewarts Theorem
3:04
Area of Triangles Technique: Cancelling sin A
4:36
Ratio and Area Theorem on a Cevian
4:19
Area of a Triangle Given Medians
4:46
Ptolemy Example with Regular Pentagon
3:34
Ptolemy Example - Completing a Triangle
