Kindergarten triangle recognition quiz

📐 Quick Study Guide

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• A triangle is a shape with three sides and three angles.
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• All the angles inside a triangle add up to 180 degrees ($180^{\circ}$).
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• Triangles can be different sizes and shapes.
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• Triangles can be named based on their angles: acute (all angles less than 90°), right (one angle is 90°), and obtuse (one angle is greater than 90°).
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• Triangles can also be named based on their sides: equilateral (all sides equal), isosceles (two sides equal), and scalene (no sides equal).

❓ Practice Quiz

1. Which of these shapes is a triangle?
   1. Circle
   2. Triangle
   3. Square
2. How many sides does a triangle have?
   1. 2
   2. 3
   3. 4
3. Which of the following is NOT a triangle?
   1. A shape with 3 sides
   2. A shape with 4 sides
   3. A shape with 3 angles
4. What is the sum of the angles inside a triangle?
   1. 90 degrees
   2. 180 degrees
   3. 360 degrees
5. Which triangle has all sides equal?
   1. Isosceles
   2. Equilateral
   3. Scalene
6. A triangle with one 90-degree angle is called:
   1. Acute
   2. Right
   3. Obtuse
7. Which of these is a characteristic of a triangle?
   1. Four sides
   2. Three sides
   3. No sides