4.4 Exploration

Slide the black dot on the left to change the figure. For each figure, enter the number of lines of symmetry in the yellow box.

Drag the slider to change the angle of rotation.

Select the triangle in task 2. Move the slider to adjust the angle of rotation. What is the smallest possible rotation that results in the figure being mapped on top of itself?

Select the rectangle in task 2. Move the slider to adjust the angle of rotation. What is the smallest possible rotation that results in the figure being mapped on top of itself?

Select the pentagon in task 2. Move the slider to adjust the angle of rotation. What is the smallest possible rotation that results in the figure being mapped on top of itself?

What mathematical process could we use to find the smallest angle of rotational symmetry?

4.4 Exploration

Slide the black dot on the left to change the figure. For each figure, enter the number of lines of symmetry in the yellow box.

Drag the slider to change the angle of rotation.

Information: 4.4 Exploration