Find the Area of a Right Triangle

This Find the Area of a Right Triangle video also includes:

Help your class develop a greater understanding of the area of a right triangle. The video starts by reviewing the area of a rectangle and noting that the rectangle is made up of two congruent triangles. Learners are then shown that in order to find the area of a right triangle, you must first find the area of the rectangle created by the original triangle and a congruent triangle. Included in this activity are a lesson commentary and a guided practice.

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CCSS: Designed
Classroom Considerations

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Pros

  • Learners develop a greater understanding of the area of a right triangle which is one-half the area of a rectangle
  • Video comes with additional commentary and a guided practice. 
Cons

  • Possible review needed on vocabulary such as compose and congruent
Common Core