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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def is_obtuse(p1, v, p2):
    '''Determine whether the angle, p1 - v - p2 is obtuse
    
    p1 - N x 2 array of coordinates of first point on edge
    v - N x 2 array of vertex coordinates
    p2 - N x 2 array of coordinates of second point on edge
    
    returns vector of booleans
    '''
    p1x = p1[:,1]
    p1y = p1[:,0]
    p2x = p2[:,1]
    p2y = p2[:,0]
    vx = v[:,1]
    vy = v[:,0]
    Dx = vx - p2x
    Dy = vy - p2y
    Dvp1x = p1x - vx
    Dvp1y = p1y - vy
    return Dvp1x * Dx + Dvp1y * Dy > 0