Classifying Triangles Quiz

Identify the type of triangle with angles measuring 60°, 60°, and 60°.

• acute

• Isosceles

• Equilateral

• Scalene

What type of triangle has one angle measuring 90° and two acute angles?

• Equilateral triangle

• Obtuse triangle

• Right-angled triangle

• Isosceles triangle

Determine the type of triangle with side lengths of 5cm, 5cm, and 5cm.

• Equilateral

• Isosceles

• Right-angled

• Scalene

Find the measure of the third angle in a triangle with angles measuring 45° and 60°.

• 105°

• 90°

• 75°

• 30°

If one angle of a triangle measures 110°, what are the measures of the other two angles?

• 120° and 60°

• 60° and 30°

• 90° and 80°

• Cannot be determined

Calculate the measure of the third angle in a triangle with angles measuring 30° and 60°.

• 120°

• 45°

• 180°

• 90°

Classify the triangle with angles measuring 45°, 45°, and 90° by its angles.

• Right triangle

• Obtuse triangle

• Equilateral triangle

• Isosceles triangle

Classify the triangle with side lengths of 6cm, 6cm, and 6cm by its sides.

• Equilateral

• Right-angled

• Isosceles

• Scalene

Determine the type of triangle with side lengths of 8cm, 15cm, and 17cm.

• Equilateral triangle

• Scalene triangle

• Isosceles triangle

• Right-angled triangle

What type of triangle has one angle measuring more than 90°?

• Equilateral triangle

• Obtuse triangle

• Right-angled triangle

• Isosceles triangle