Unit 5, Lesson 3, Grade 6 icon
Unit 5, Lesson 3

The Area of Acute Triangles Using Height and Base

EngageNY 45 min(s)Support for English Language Learners

Students show the area formula for a triangular region by decomposing a triangle into right triangles. For a given triangle, the height of the triangle is the length of the altitude. Students understand that the height of the triangle is the perpendicular segment from a vertex of a triangle to the line containing the opposite side. Students understand that any side of a triangle can be considered a base and that the choice of base determines the height.

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