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
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Question 1
Multiple choice
A triangle has angles of 60°, 60°, and 60°. What type of triangle is it by angles?
Question 2
Multiple choice
A triangle has angles of 90°, 45°, and 45°. What type is it by angles?
Question 3
Multiple choice
A triangle has angles of 30°, 60°, and 90°. Which angle makes it right-angled?
Question 4
Sequence
A triangle has angles 40°, 70°, and ___°. The total must equal 180°.
Question 5
True or false
An equilateral triangle is always an acute triangle.