# 15.9: Exercises


Exercise $$\PageIndex{1}$$

Write a definition for a class named Circle with attributes center and radius, where center is a Point object and radius is a number.

Instantiate a Circle object that represents a circle with its center at $$(150,100)$$ and radius $$75$$.

Write a function named point_in_circle that takes a Circle and a Point and returns True if the Point lies in or on the boundary of the circle.

Write a function named rect_in_circle that takes a Circle and a Rectangle and returns True if the Rectangle lies entirely in or on the boundary of the circle.

Write a function named rect_circle_overlap that takes a Circle and a Rectangle and returns True if any of the corners of the Rectangle fall inside the circle. Or as a more challenging version, return True if any part of the Rectangle falls inside the circle.

Solution

http://thinkpython2.com/code/Circle.py

Exercise $$\PageIndex{2}$$

Write a function called draw_rect that takes a Turtle object and a Rectangle and uses the Turtle to draw the Rectangle. See Chapter 4 for examples using Turtle objects.

Write a function called draw_circle that takes a Turtle and a Circle and draws the Circle.

Solution

http://thinkpython2.com/code/draw.py

15.9: Exercises is shared under a CC BY-NC 3.0 license and was authored, remixed, and/or curated by Allen B. Downey.