Final answer:
After dividing the total sum of exterior angles of a polygon (360°) by the given exterior angle measure (24°), it is found that Sandra's garden has 15 sides, known as a pentadecagon.
Step-by-step explanation:
The question involves Sandra who is creating a garden in the shape of a regular polygon and wanting to determine how many sides the garden has, given that the exterior angles each measure 24°.
The sum of the exterior angles of any polygon is 360°. To find out how many sides the garden's polygon has, you can divide 360° by the measure of each exterior angle.
Here's how you calculate it:
- Write down the total sum of exterior angles: 360°.
- Divide this sum by the measure of one exterior angle: 360° ÷ 24° = 15.
Hence, the garden has 15 sides, which makes it a pentadecagon.