Triangle Classification and Properties

This video tutorial covers the classification of triangles based on their sides and angles. It explains the different types of triangles: equilateral, isosceles, and scalene, as well as acute, right, and obtuse triangles. The tutorial includes practical exercises to help reinforce the concepts taught. The video emphasizes understanding the properties of triangles without relying heavily on technology, encouraging learning through paper-based methods.

What is the main focus of the video tutorial?

• Learning advanced technology

• Learning mathematics with minimal technology

• Learning history

• Learning science

Which type of triangle has all sides of equal length?

• Isosceles

• Scalene

• Right

• Equilateral

What is a characteristic of an isosceles triangle?

• It has a right angle

• All angles are equal

• At least two sides are equal

• All sides are different

Which type of triangle has no congruent sides?

• Scalene

• Equilateral

• Right

• Isosceles

What is an acute triangle?

• A triangle with all angles less than 90 degrees

• A triangle with one obtuse angle

• A triangle with all sides equal

• A triangle with one right angle

What defines a right triangle?

• All sides are equal

• All angles are less than 90 degrees

• One angle is exactly 90 degrees

• One angle is more than 90 degrees

What is an obtuse triangle?

• A triangle with all angles less than 90 degrees

• A triangle with one angle more than 90 degrees

• A triangle with all sides equal

• A triangle with one right angle

What is the range of an acute angle?

• 90 to 180 degrees

• 45 to 90 degrees

• 0 to 45 degrees

• 0 to 90 degrees

If a triangle has sides of 4 cm, 4 cm, and 4 cm, how is it classified?

• Isosceles and acute

• Equilateral and acute

• Scalene and obtuse

• Right and isosceles

A triangle has angles of 60 degrees, 60 degrees, and 60 degrees. How is it classified?

• Right triangle

• Obtuse triangle

• Scalene triangle

• Acute triangle