Classifying Triangles: Types Based on Sides and Angles

The video tutorial explains how triangles can be classified based on their sides and angles. It covers three types of triangles by sides: equilateral, isosceles, and scalene, and three types by angles: acute, right, and obtuse. The video also includes examples to help identify these types of triangles.

What type of triangle has all three sides of equal length?

• Acute Triangle

• Scalene Triangle

• Equilateral Triangle

• Isosceles Triangle

Which statement is true for an equilateral triangle?

• It has one 90-degree angle

• It has two equal sides

• All sides are of equal length

• It has one angle greater than 90 degrees

Which triangle has two sides of equal length?

• Right Triangle

• Isosceles Triangle

• Scalene Triangle

• Equilateral Triangle

Can an isosceles triangle also be a right triangle?

• Yes, if it has a 90-degree angle

• Yes, if all sides are equal

• No, it cannot

• No, only if it has an obtuse angle

What defines a scalene triangle?

• Two equal sides

• All angles less than 90 degrees

• All sides are different lengths

• One angle is 90 degrees

Which triangle is defined by having no equal sides?

• Equilateral Triangle

• Isosceles Triangle

• Scalene Triangle

• Acute Triangle

Which triangle has all interior angles less than 90 degrees?

• Acute Triangle

• Scalene Triangle

• Right Triangle

• Obtuse Triangle

What type of triangle has all angles smaller than 90 degrees?

• Scalene Triangle

• Acute Triangle

• Obtuse Triangle

• Right Triangle

What is a right triangle?

• A triangle with all angles less than 90 degrees

• A triangle with one interior angle of 90 degrees

• A triangle with one angle greater than 90 degrees

• A triangle with all sides equal

What type of triangle has one angle greater than 90 degrees?

• Obtuse Triangle

• Right Triangle

• Acute Triangle

• Equilateral Triangle