a) Spejl mønstrene med Spejl i linje-værktøjet ved at klikke på figuren,
der skal spejles og derefter på den linje, den skal spejles i.

b) Tegn selv en figur og spejl i linjerne. 

c) Tegn selv figur og spejlingslinjer. 

A = (-1.8, 5.4)
B = (-1.6, 5.4)
C = (-1.4, 5.2)
D = (-1.3961004283918752, 4.973703965996261)
E = (-1.6, 5.2)
F = (-1.6, 4.8)
G = (-1.8, 4.8)
H = (-1.8, 5.2)
I = (-2, 5)
J = (-2, 5.2)
polygon1, a, b, c, d, e, f, g, h, i, j = Polygon(A, B, C, D, E, F, G, H, I, J)
K = (-1.4, 5.6)
L = (-1.4, 2.6)
k = Segment(K, L)
M = (-2, 5.4)
N = (-0.8, 5.4)
O = (-0.8, 3)
P = (-2, 3)
l = PolyLine(M, N, O, P)
m = Segment(M, P)
Q = (-0.6, 5.4)
R = (-0.6, 4.2)
n = Segment(Q, R)
S = (2.6, 5.4)
p = Segment(Q, S)
T = (2.6, 4.2)
q = Segment(S, T)
r = Segment(T, R)
U = (-0.6, 4)
V = (-0.6000000000000002, 2.8)
s = Segment(U, V)
W = (2.6, 4)
t = Segment(U, W)
Z = (2.5999999999999996, 2.8)
a_1 = Segment(W, Z)
b_1 = Segment(V, Z)
A_1 = (-0.4, 5.2)
B_1 = (-0.2, 5)
C_1 = (-0.4, 4.8)
D_1 = (-0.2, 4.6)
E_1 = (-0.4, 4.6)
F_1 = Point(n)
G_1 = (-0.4, 5)
polygon2, q_1, b_2, c_1, d_1, r_1, e_1, f_1, g_1 = Polygon(Q, B_1, C_1, D_1, R, E_1, F_1, G_1)
H_1 = Point(p)
I_1 = (-0.2, 4.2)
J_1 = Point(p)
K_1 = Point(r)
i_1 = Segment(J_1, K_1)
L_1 = (-0.2, 5.4)
M_1 = (-0.2, 4.2)
h_1 = Segment(L_1, M_1)
N_1 = Point(p)
O_1 = Point(r)
j_1 = Segment(N_1, O_1)
P_1 = (0.2, 4.2)
k_1 = Segment(N_1, P_1)
Q_1 = Intersect(q, r)
l_1 = Segment(T, Q_1)
R_1 = (-0.4, 3.6)
S_1 = Point(p)
T_1 = Point(r)
m_1 = Segment(S_1, T_1)
U_1 = Point(p)
V_1 = Point(r)
n_1 = Segment(U_1, V_1)
W_1 = Point(p)
Z_1 = Point(r)
p_1 = Segment(W_1, Z_1)
A_2 = Point(p)
B_2 = Point(r)
s_1 = Segment(A_2, B_2)
C_2 = Point(p)
D_2 = Point(r)
t_1 = Segment(C_2, D_2)
E_2 = Point(p)
F_2 = Point(r)
a_2 = Segment(E_2, F_2)
G_2 = (2.8, 4.6)
H_2 = (4.6, 4.6)
I_2 = (4.6, 2.8)
J_2 = (2.8, 2.8)
c_2 = PolyLine(G_2, H_2, I_2, J_2)
d_2 = Segment(G_2, J_2)
K_2 = Point(s)
L_2 = Point(a_1)
e_2 = Segment(K_2, L_2)
M_2 = (2.6, 4)
N_2 = (2.6, 2.8)
f_2 = Segment(M_2, N_2)
O_2 = Point(t)
P_2 = (1, 2.8)
g_2 = Segment(O_2, P_2)
Q_2 = Intersect(a_1, b_1)