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Triangles Mastery Quiz

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Triangles Mastery Quiz

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Test your knowledge about the main properties of triangles: classification by sides and angles, angle sum property (180°), triangle inequality theorem, side-angle relationship, and exterior angle theorem. Based on Asif(2019)

Created by

Yulitza Benavides
Yulitza Benavides
Colombia

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Triangles Mastery Quiz
 

Triangles Mastery QuizOnline version

Test your knowledge about the main properties of triangles: classification by sides and angles, angle sum property (180°), triangle inequality theorem, side-angle relationship, and exterior angle theorem. Based on Asif(2019)

by Yulitza Benavides
1

Which triangle has all sides equal?

2

A triangle with one angle greater than 90 degrees is called?

3

The sum of interior angles in any triangle is what measure?

4

Which statement expresses the triangle inequality theorem?

5

In a triangle, larger side is opposite the larger angle. True or False?

6

Exterior angle theorem states an exterior angle equals the sum of which angles?

7

Is it possible for a triangle to have two obtuse angles?

8

A triangle with sides 5, 7, 9 is:

9

In a right triangle, the sum of the two acute angles is:

Feedback

Equilateral triangles have all three sides equal.

Obtuse triangles contain one angle > 90°.

The angle-sum property states 180 degrees.

For any triangle, a + b > c, a + c > b, b + c > a.

Angle and opposite side correspond: larger side ↔ larger opposite angle.

An exterior angle equals the sum of the two non-adjacent interior angles.

Two obtuse angles would exceed 180°, impossible in a triangle.

5 + 7 > 9, 5 + 9 > 7, 7 + 9 > 5 — valid triangle.

Acute angles add to the complementary 90°.

 
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