Classifying Triangles

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Objective

I can classify triangles by their angles (right, acute, or obtuse) and sides (equilateral, scalene, or isosceles) and explain my reasoning.

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

7 questions

1

Explain the difference between an acute, right, and obtuse triangle.

2

Explain the difference between a scalene, isosceles, and equilateral triangle.

Part 3 of 3

Exit ticket

Quick comprehension check

A triangle has side lengths of 4 cm, 7 cm, and 9 cm. It also has angles measuring 22°, 48°, and 110°. Classify the triangle by its sides and by its angles. Explain your reasoning for each classification. A triangle has side lengths of 6 inches, 6 inches, and 6 inches. All of its angles measure 60°. Classify the triangle by its sides and by its angles. Explain your reasoning for each classification.

Sample answer included in the free materials

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  • Teacher Guide

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