import numpy as np
import matplotlib.pyplot as plt

a, b = 150, 75

vertices = np.array([
    [-a, -b],  
    [-a,  b],
    [ a,  b],
    [ a, -b]
])

edges = [
    [0, 1],  
    [1, 2],  
    [2, 3],
    [3, 0] 
]

plt.figure(figsize=(12, 8))
for edge in edges:
    v1 = vertices[edge[0]]
    v2 = vertices[edge[1]]
    # Plot the edge
    plt.plot([v1[0], v2[0]], [v1[1], v2[1]], 'r-', linewidth=2)

plt.axis('equal')
#plt.grid(True)
plt.xlabel('x')
plt.ylabel('y')
plt.title('Rectangle using vertices')
plt.show()