Angles and Triangles

Which one is NOT a type of triangle?

• Scalene

• Isosceles

• Right-angled

• Quadrilateral

The interior angles are the angles on the...

• Outside

• Inside

The sum of the interior angles of any triangle is equal to...

• 120 degrees

• 180 degrees

• 260 degrees

• 360 degrees

The sum of the exterior angles of any triangle is equal to...

• 180 degrees

• 240 degrees

• 290 degrees

• 360 degrees

An equilateral triangle has three sides which are all equal to...

• 60 degrees

• 45 degrees

• 90 degrees

• 30 degrees

A triangle that has two equal sides is called a...

• Isosceles

• Right-angled

• Equilateral

• Scalene

A triangle that has zero equal sides is called a...

• Right-angled

• Scalene

• Isosceles

• Equilateral

A triangle that has one angle equal to 90 degrees is called a...

• Scalene

• Isosceles

• Right-angled

• Equilateral

A triangle that has three equal sides is called a...

• Equilateral

• Right-angled

• Scalene

• Isosceles

Find the missing angle C

• 75 degrees

• 45 degrees

• 55 degrees

• 65 degrees