スライダを動かして，区間の範囲を見てみよう．

A = (-5, 4)
B = (5, 4)
a = Vector(A, B)
C = (-5, 2)
D = (5, 2)
E = (-5, 0)
F = (5, 0)
G = (-5, -2)
H = (5, -2)
a_1 = 0.8 (slider from -5 to 5, step 0.1)
a_2 = -2.4 (slider from -5 to 5, step 0.1)
I: (a_1, 4)
K = (5, 4.4)
J: (a_1, 4.4)
e = Segment(I, J)
f = Segment(J, K)
L: (a_2, 2)
M: (a_2, 2.4)
g = Segment(L, M)
N = (-5, 2.4)
h = Segment(M, N)
O: (a_2, 0)
P: (a_2, 0.4)
i = Segment(O, P)
Q: (a_1, 0.4)
j = Segment(P, Q)
R: (a_1, 0)
k = Segment(Q, R)
S: (a_2, -2)
T: (a_2, -1.6)
l = Segment(S, T)
U = (-5, -1.6)
m = Segment(T, U)
V: (a_1, -2)
W: (a_1, -1.6)
n = Segment(V, W)
Z = (5, -1.6)
p = Segment(W, Z)
テキスト1: "" + a_1 + ""
テキスト2: "" + a_1 + "≦x"
A_1: (a_1 - 0.5, 3.2)
B_1: (a_2 - 0.5, 1.2)
C_1: (a_2 - 0.5, -0.8)
b = Vector(C, D)
c = Vector(E, F)
d = Vector(G, H)
D_1: (a_1 - 0.5, -0.8)
I_1: (a_1, 4)
J_1: (a_1, 4.4)
Q_1: (a_1, 0.4)
R_1: (a_1, 0)
V_1: (a_1, -2)
W_1: (a_1, -1.6)
A_2: (a_1 - 0.5, 3.2)
E_1: (a_2 - 0.5, -2.8)
F_1: (a_1 - 0.5, -2.8)
テキスト3: "" + a_2 + ""
テキスト1_2: "" + a_2 + ""
テキスト4: "" + a_1 + ""
テキスト5: "" + a_2 + ""
テキスト6: "" + a_1 + ""
テキスト7: "x≦" + a_2 + ""
L_1: (a_2, 2)
M_1: (a_2, 2.4)
O_1: (a_2, 0)
P_1: (a_2, 0.4)
S_1: (a_2, -2)
T_1: (a_2, -1.6)
B_2: (a_2 - 0.5, 1.2)
C_2: (a_2 - 0.5, -0.8)
E_2: (a_2 - 0.5, -2.8)
テキスト3_1: "" + a_2 + ""
テキスト1_1: "" + a_2 + ""
テキスト5_1: "" + a_2 + ""
L_2: (a_2, 2)
M_2: (a_2, 2.4)
O_2: (a_2, 0)
P_2: (a_2, 0.4)
S_2: (a_2, -2)
T_2: (a_2, -1.6)
B_3: (a_2 - 0.5, 1.2)
C_3: (a_2 - 0.5, -0.8)
E_3: (a_2 - 0.5, -2.8)
テキスト3_2: "" + a_2 + ""
テキスト1_3: "" + a_2 + ""
テキスト5_2: "" + a_2 + ""
テキスト7_1: "" + a_2 + "≦ x ≦" + a_1 + ""
テキスト7_2: "x ≦" + a_2 + ", " + a_1 + "≦ x"