. Grade 6, Illustrative icon

Base and Height

Illustrative MathematicsVaries

It is common for students to think that the base of a triangle must be the side that is on the 'bottom' of the triangle. So students might be tempted to say that Raul has not correctly identified a base and height for the triangle. The mistakes that Mark and Kiki have made also represent common errors. The purpose of this task is to help students understand what is meant by a base and its corresponding height in a triangle and to be able to correctly identify all three base-height pairs.

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