Triangles

What is the sum of the interior angles of a triangle?

• 90

• 360

• 180

• 270

What is the name of a triangle with all sides of different lengths?

• Equilateral triangle

• Isosceles triangle

• Scalene triangle

• Right triangle

If one angle of a triangle is 90 degrees, what is it called?

• Right-angled triangle

• Equilateral triangle

• Acute-angled triangle

• Isosceles triangle

What is the formula to calculate the area of a triangle?

• base + height

• (base * height) / 2

• base - height

• base * height

In a right-angled triangle, what is the side opposite to the right angle called?

• Base

• Adjacent

• Opposite

• Hypotenuse