绘制三角形

def solve():
    import matplotlib.pyplot as plt
    vertices = [(____, ____), (____, ____), (____, ____)]
    x = [v[____] for v in vertices] + [vertices[____][____]]
    y = [v[____] for v in vertices] + [vertices[____][____]]
    plt.figure(figsize=(____, ____))
    plt.plot(____)
    plt.scatter(____)
    for i, v in enumerate(____):
        plt.annotate(f'____', v, textcoords="____", xytext=(____,____))
    plt.axis(____)
    plt.grid(____)
    plt.title(____)
    plt.show()