Area of Trapezoids and Polygons

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Objective

I can find the area of trapezoids and polygons by breaking them into smaller shapes like triangles and rectangles.

Part 1 of 3

Warm-up video

Unknown Channel · 5:00

We don't generate video — this one is by Unknown Channel on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.

Part 2 of 3

Practice

6 questions

1

Define a trapezoid and explain which sides are considered the bases.

2

Explain why the formula for the area of a trapezoid (½ × height × (base₁ + base₂)) relates to the area of triangles.

Part 3 of 3

Exit ticket

Quick comprehension check

A trapezoid has bases of 6 cm and 10 cm, and a height of 5 cm. What is the area of the trapezoid? Show your work. A trapezoid has bases of 7 meters and 9 meters, and a height of 4 meters. What is the area of the trapezoid? Show your work. A trapezoid has bases of 8 inches and 12 inches, and a height of 6 inches. What is the area of the trapezoid? Show your work.

Sample answer included in the free materials

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Teacher guide, student handout, and slides — free, in Google Docs format

  • Teacher Guide

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