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再試一次！

答對了！

r = 0 (slider from 0 to 6)
A: (r, 0)
B: (r + 5, 0)
C: (r, 5)
D: (r + 5, 5)
q1, a, b_1, d, c = Polygon(A, B, D, C)
k = 9 (slider from 0 to 100, step 1)
list_1 = Sequence(Segment[(r, a), (r + 5, a)], a, 0, 5, 5 / k)
l = 2 (slider from 0 to k, step 1)
C': (r, (5 / k * l))
D': (r + 5, (5 / k * l))
q2, a_1, b_2, d', c' = Polygon(A, B, D', C')
A': (6, 0)
C'': (6, 5)
D'': (11, 5)
B': (11, 0)
q3, a', b', d'', c'' = Polygon(A', B', D'', C'')
m = 10 (slider from 0 to 100, step 1)
n = 7 (slider from 0 to m, step 1)
B'': (6 + (5 / m * n), 0)
D''': (6 + (5 / m * n), 5)
q4, a'_1, b'', d''', c''_1 = Polygon(A', B'', D''', C'')
list_2 = Sequence(Segment[(c, 0), (c, 5)], c, 6, 11, 5 / m)
inputBox1 = Textfield(l)
inputBox2 = Textfield(k)
inputBox3 = Textfield(n)
inputBox4 = Textfield(m)
ans_l = NaN
inputBox5 = Textfield(ans_l)
ans_k = NaN
inputBox6 = Textfield(ans_k)
ans_n = NaN
inputBox7 = Textfield(ans_n)
ans_m = NaN
inputBox8 = Textfield(ans_m)
α = false
ans_ln = NaN
inputBox9 = Textfield(ans_ln)
ans_km = NaN
inputBox10 = Textfield(ans_km)
β = false
ans_lns = NaN
inputBox11 = Textfield(ans_lns)
ans_kms = NaN
inputBox12 = Textfield(ans_kms)
γ = false
γ_n = false
β_n = false
β_m = false
α_n = false