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Math · Age 9 · Geometry

Classifying Triangles by Angles (Ex. 2)

Identify triangle types by their angle measurements.

Module

Geometry

Age

Age 9

Duration

8 min

Questions

5

What's in this exercise

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  1. Question 1

    Multiple choice

    A triangle has angles of 60°, 60°, and 60°. What type of triangle is it by angles?

  2. Question 2

    Multiple choice

    A triangle has angles of 90°, 45°, and 45°. What type is it by angles?

  3. Question 3

    Multiple choice

    A triangle has angles of 30°, 60°, and 90°. Which angle makes it right-angled?

  4. Question 4

    Sequence

    A triangle has angles 40°, 70°, and ___°. The total must equal 180°.

  5. Question 5

    True or false

    An equilateral triangle is always an acute triangle.

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