Math Lesson 1 - Vocabulary

A triangle with 3 equal sides and 3 equal angles

• Equilateral Triangle

• Scalene Triangle

• Obtuse Triangle

• Isosceles Triangle

• Right Triangle

A triangle with no equal sides

• Equilateral Triangle

• Scalene Triangle

• Isosceles Triangle

• Obtuse Triangle

• Right Triangle

A triangle with 2 equal angles

• Equilateral Triangle

• Scalene triangle

• Isosceles Triangle

• Obtuse Triangle

• Right Triangle

A triangle with one angle greater than 90°

• Equilateral Triangle

• Scalene Triangle

• Isosceles Triangle

• Obtuse Triangle

• Right Triangle

A triangle with a angle of 90°

• Equilateral Triangle

• Scalene Triangle

• Isosceles Triangle

• Obtuse Triangle

• Right Triangle

Is formed by two lines that meet at a common endpoint, or vertex

What angle is this?

• Acute

• Obtuse

• Right

• Straight

• Complete

What kind of angle is this?

• Acute

• Obtuse

• Right

• Reflex

• Straight

What Angle is this?

• Acute

• Obtuse

• Reflex

• Straight

• Complete

Draw a Right Angle