Triangles
Test your knowledge of triangles — classifying them by side and angle, and the core theorems that describe how they work.
Questions cover triangle classification, the angle sum theorem, the Pythagorean theorem, valid side lengths, and the area formula.
Triangles are everywhere in geometry — see how solid your fundamentals are.
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Sample questions3 of 12 shown
Q1
What is the sum of all interior angles in any triangle?
Q2
Which type of triangle has all three sides of equal length?
Q3
A right triangle has one angle of 90 degrees. If one of the other angles is 35 degrees, what is the third angle?
What This Quiz Covers
- Classifying triangles by sides and angles
- The triangle angle sum theorem
- The Pythagorean theorem
- Valid triangle side lengths
- Triangle area formula
- Properties true for all triangles
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