TRIANGLE AND QUADRILATERALS

It is a polygon with three sides, 3 vertices and 3 angles.

• Circle
• Triangle
• Square

It is a triangle which has three equal sides.

• Equilateral triangle
• Right triangle
• Isosceles triangle

It is a triangle which has two equal sides.

• Isosceles triangle
• Right Triangle
• Scalene triangle

A triangle which has no equal side.

• Isosceles triangle
• Scalene triangle
• Equilateral triangle

A triangle which has a right or 90° angle.

• Right triangle
• Acute triangle
• right angle

A triangle which has three acute angles or angles measuring less than 90°.

• Right angle
• acute angle
• acute triangle

A triangle which has one obtuse angle or an angle measuring greater than 90°.

• Obtuse triangle
• Obtuse angle
• Acute triangle

A triangle which has three equal angles each measuring 60°.

• equilateral triangle
• right triangle
• acute triangle

What is the total measure of angles of a triangle?

• 90°
• 180°
• 60°

• Equilateral Triangle
• Isosceles triangle
• Scalene Triangle