import pygame, sys

pygame.init()

display = pygame.display.set_mode((300, 300))
display.fill((255, 255, 255))

pygame.draw.polygon(display, (0, 0, 255), points=[(10, 10), (60, 20), (180, 100)])

pygame.draw.rect(display, (255, 0, 0), (40, 80, 200, 80), border_radius=20)

while True:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            sys.exit()
    
    pygame.display.update()