Classifying Triangles Based On Angle Properties

The video tutorial explains the concept of polygons, focusing on triangles. It describes how triangles are classified based on their angles into right, obtuse, and acute triangles. The tutorial provides examples of each type and guides viewers on how to identify and classify triangles by examining their angles.

What is a polygon?

• A closed two-dimensional shape made up of line segments

• A three-dimensional shape with curved surfaces

• A shape with only one side

• A shape with no angles

Which type of triangle has one angle that is exactly 90 degrees?

• Acute triangle

• Equilateral triangle

• Obtuse triangle

• Right triangle

If a triangle has an angle greater than 90 degrees, what is it called?

• Obtuse triangle

• Right triangle

• Scalene triangle

• Acute triangle

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

• Isosceles triangle

• Right triangle

• Obtuse triangle

• Acute triangle

How can you verify if a triangle is a right triangle?

• Ensure one angle is greater than 90 degrees

• Use a right angle model to confirm one angle is 90 degrees

• Measure if all sides are equal

• Check if all angles are equal