Symmetries of Triangles Quiz

What is the identity transformation for an equilateral triangle?

• Flipping about the vertical axis

• Rotating 120° clockwise

• Doing nothing to the triangle

• Rotating 240° counterclockwise

How many elements are there in the symmetry group of an equilateral triangle?

• Six

• Eight

• Two

• Four

What is the order of the rotation transformation in the symmetry group of an equilateral triangle?

• Two

• Three

• Four

• Five

Which transformation is not possible for an isosceles triangle?

• Identity

• Flip

• Rotation

• Translation

What is the symmetry group of a scalene triangle?

• Four elements

• Three elements

• Two elements

• One element