The isosceles triangle comes with its own set of properties. A lecturer shows how to apply the Isosceles Triangle Theorem to find missing side lengths or angle measures. The final example involves both square roots and quadratic equations. 

Concepts

isosceles triangles, angles, theorems, quadratic equations, square root functions

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Additional Tags

math

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Instructional Ideas

• Have learners record all postulates, theorems, and definitions in a graphic organizer with examples
• Create a set of practice problems to match the instruction in the video

Classroom Considerations

• If assigning the video, ensure pupils have access to the Internet 
• The final installment in the 40-part geometry series

• This video is hosted on YouTube

Pros

• Instructor demonstrates different level of examples to allow for differentiation

Cons

• Work on the last example is difficult to follow on the screen

Common Core

HSG-CO.C.10