Question

Define a function drawCircle. This function should expect a Turtle object, the coordinates of the circle’s center point, and the circle’s radius as argu- ments. The function should draw the specified circle. The algorithm should draw the circle’s circumference by turning 3 degrees and moving a given distance 120 times. Calculate the distance moved with the formula 2.0 * p * radius / 120.0

Answer 1

A function named drawCircle can be defined to draw a circle using Turtle Graphics. This requires looping with a minor turn and moving a distance calculated by 2.0 * π * radius / 120.0. These steps approximate the circle's circumference when repeated 120 times.

Step-by-step explanation:

The question is asking for a definition of a function drawCircle that uses a Turtle object to draw a circle on the screen. This Turtle Graphics function will make use of basic geometry and the properties of a circle to complete the task. Using the Turtle object, the function will perform a loop, turning a small angle and moving forward a calculated distance each iteration to approximate the circumference of a circle.

The distance each step should move can be calculated with the formula 2.0 * π * radius / 120.0, where π (pi) is approximately 3.14159, the constant ratio of a circle's circumference to its diameter. This calculation is derived from the geometry of a circle where the arc length (the distance along the circumference) for the small angle turned each time is a fraction of the circle's total circumference. By repeating the turn and small forward movement 120 times, the approximation of a circle's edge is drawn.