Types of Triangles and Their Properties

The video tutorial explains how to classify triangles based on their angles and sides. Triangles can be categorized as acute, right, or obtuse based on their angles. They can also be classified as scalene, isosceles, or equilateral based on their sides. The video emphasizes that a triangle cannot have more than one obtuse or right angle.

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

• Acute triangle

• Scalene triangle

• Obtuse triangle

• Right triangle

Which of the following is true about a right triangle?

• It has one angle greater than 90 degrees

• It has no angles equal to 90 degrees

• It has all angles equal

• It has one angle equal to 90 degrees

How many obtuse angles can a triangle have?

• Three

• None

• Two

• One

What is a triangle called if it has no sides of equal length?

• Right

• Equilateral

• Isosceles

• Scalene

Which type of triangle has all sides of equal length?

• Scalene

• Obtuse

• Isosceles

• Equilateral