Triangles: Using the Sum of the Angles Property
This clip explains how to use the sum of the angles property of triangles to find the measure of an unknown angle when the measure of the other two angles is known.
Triangles: Altitude in Triangles
This clip looks at a feature of isosceles triangles that has to do with altitude (or height). "The altitude is a perpendicular line segment from the base to the vertex of the opposite angle," the clip explains. "The altitude bisects the base and opp...
Triangles: Closer Look at Isosceles Triangles, A
This clip focuses on isosceles triangles, explaining that the equal sides are called the legs, while the remaining side is called the base. The clip notes that the base angles have the same measure, adding that, "Â…this feature of an isosceles trian...
Triangles: Introduction to Triangles
This clip talks about the ways in which triangles are used in various professions. It also introduces the different types of triangles (equilateral, scalene and isosceles).