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2.9.5 Four Colored Triangles CodeHS Answers

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The most common answer is:

Adding the extra forward line makes it spazz out for some reason
def triangle():
for i in range (4):

This code seems to be attempting to draw four colored triangles, but it’s not structured correctly for that purpose. The triangle function as defined doesn’t actually draw a triangle; instead, it moves forward a bit and then executes a series of rotations and color changes without clear triangle formations. Also, the initial part of the code before the function definition seems to be an attempt at drawing something else, not a triangle.

You’d need a loop that draws a triangle and then changes the position and/or color for the next triangle to draw four triangles in four different colors.

Let’s correct the code to draw four triangles, each in a different color, and positioned in a way that they don’t overlap:

import turtle

# Set the pen size

# Function to draw a triangle
def draw_triangle(color, start_pos):
    turtle.penup()  # Lift the pen to move to the start position
    turtle.goto(start_pos)  # Move to the specified start position
    turtle.pendown()  # Put the pen down to start drawing
    turtle.color(color)  # Set the color for the triangle
    for _ in range(3):
        turtle.forward(100)  # Draw the side of the triangle
        turtle.right(120)  # Turn right 120 degrees to form the angle of the triangle

# Starting positions for each triangle
positions = [(-50, 0), (50, 0), (0, 86), (100, 86)]
colors = ["red", "green", "blue", "yellow"]

# Draw four triangles
for pos, color in zip(positions, colors):
    draw_triangle(color, pos)

turtle.done()  # Keep the window open until manually closed

This code defines a draw_triangle function that takes a color and a start position. It then uses this function to draw four triangles, each with a different color and starting position. The positions list contains the starting positions for each triangle to ensure they are spaced out and do not overlap.

The colors list specifies the color of each triangle. The zip function is used to iterate over both the positions and colors simultaneously, passing them to the draw_triangle function for each of the four triangles.

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