An Introduction to Triangles: Identifying Types and Properties

What is a key characteristic of a scalene triangle?

• All sides are different

• Two sides are equal

• All sides are equal

• It has a right angle

Which of the following is true about an isosceles triangle?

• It has no line of symmetry

• All angles are 60 degrees

• It has two equal sides and two equal angles

• It has three equal sides

In an equilateral triangle, what is the measure of each angle?

• 90 degrees

• 45 degrees

• 120 degrees

• 60 degrees

What defines a right-angled triangle?

• One angle is exactly 90 degrees

• All angles are less than 90 degrees

• All sides are equal

• One angle is more than 90 degrees

Which type of triangle has all angles less than 90 degrees?

• Obtuse-angled triangle

• Acute-angled triangle

• Right-angled triangle

• Scalene triangle