Exploring Rational Expressions: Addition and Subtraction Techniques

This video tutorial explains how to classify triangles based on their sides and angles. It covers three types of triangles by sides: equilateral, isosceles, and scalene, and three types by angles: acute, obtuse, and right. The tutorial provides a clear understanding of the properties and characteristics of each type, helping learners to identify and differentiate between them.

What is a common feature of all triangles?

• Two vertices

• One angle

• Three sides

• Four sides

What defines an equilateral triangle?

• No equal sides

• Two equal sides

• All sides equal

• One right angle

In which triangle are the lengths of all sides equal?

• Scalene

• Isosceles

• Obtuse

• Equilateral

How many sides are of equal length in an isosceles triangle?

• None

• Two

• One

• Three

Which triangle classification is based on having two sides of the same length?

• Acute

• Scalene

• Equilateral

• Isosceles

Which triangle has all sides of different lengths?

• Equilateral

• Isosceles

• Scalene

• Acute

What distinguishes a scalene triangle?

• One right angle

• All sides different

• All angles acute

• Two equal sides

What type of angle does a right triangle always include?

• Obtuse

• Straight

• Acute

• Right

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

• Obtuse

• Isosceles

• Right

• Acute

Which triangle has exactly one angle greater than 90 degrees?

• Equilateral triangle

• Acute triangle

• Obtuse triangle

• Right triangle