Think Python - Denison University

48 Chapter 5. Conditionals and recursion1. Write a function named is_triangle that takes three integers as arguments, and that printseither “Yes” or “No,” depending on whether you can or cannot form a triangle from stickswiththe given lengths.2. Write a function that prompts the user to input three stick lengths, converts them to integers,and usesis_triangletocheck whether stickswiththegiven lengths can form atriangle.The following exercises useTurtleWorld from Chapter 4:Exercise 5.3 Read the following function and see if you can figure out what it does. Then run it(seetheexamples inChapter 4).def draw(t, length, n):if n == 0:returnangle = 50fd(t, length*n)lt(t, angle)draw(t, length, n-1)rt(t, 2*angle)draw(t, length, n-1)lt(t, angle)bk(t, length*n)Exercise 5.4 The Koch curve is afractal that looks something likethis:To draw aKoch curve withlength x, allyou have todois1. Draw aKoch curve withlength x/3.2. Turn left 60degrees.3. Draw aKoch curve withlength x/3.4. Turn right 120 degrees.5. Draw aKoch curve withlength x/3.6. Turn left 60degrees.7. Draw aKoch curve withlength x/3.The only exception isifxislessthan 3. Inthat case, you can justdraw astraight linewithlength x.1. Write a function called koch that takes a turtle and a length as parameters, and that uses theturtletodraw aKoch curve withthe given length.