Geometry quiz: Can you correctly classify triangles by their sides?

📐 Quick Study Guide

• 📏 Equilateral Triangle: 💡 All three sides are equal in length. All three angles are also equal (60 degrees each).
• 📐 Isosceles Triangle: 🧩 Two sides are equal in length. The angles opposite the equal sides are also equal.
• 📊 Scalene Triangle: ✒️ All three sides have different lengths. All three angles are different as well.

✍️ Practice Quiz

1. Which of the following statements is true for an equilateral triangle?
   1. All sides are different lengths.
   2. Two sides are equal in length.
   3. All sides are equal in length.
   4. No sides are equal in length.
2. A triangle has sides of length 5cm, 5cm, and 8cm. What type of triangle is it?
   1. Equilateral
   2. Scalene
   3. Isosceles
   4. Right
3. In a scalene triangle...
   1. All angles are equal.
   2. Two angles are equal.
   3. No angles are equal.
   4. One angle is 90 degrees.
4. A triangle has angles of 60°, 60°, and 60°. What type of triangle is it based on its sides?
   1. Scalene
   2. Isosceles
   3. Equilateral
   4. Right
5. A triangle has sides measuring 3cm, 4cm, and 5cm. What type of triangle is it?
   1. Equilateral
   2. Isosceles
   3. Scalene
   4. Right
6. Which triangle has at least two angles that are the same?
   1. Scalene
   2. Equilateral
   3. Right
   4. None of the above
7. A triangle has two sides with equal length. Which of the following is correct?
   1. It must be scalene
   2. It must be equilateral
   3. It must be isosceles
   4. It can only be right angled