 \text{Zostrojte rovnobežník ak je dané:  } \( a, \;  b ,  \; \phi =∡´(AC,BD)  \) 

1.  \; τ(\overrightarrow{AB}):B→A'

4.  \; C_1∈k∩o

5.  \; ABCD

a = 9 (slider from 3 to 12, step 0.1)
b = 7 (slider from 0.1 to 10, step 0.1)
α = 1.9198621771937625 rad (slider from 0 to 180°, step 0.017453292519943295)
A = (2, 2)
B = Point(Circle[A, a])
B' = Rotate(B, (-α), A)
f = Segment(A, B)
A' = Mirror(A, B)
β = Angle(B', A, B)
h = Line(A, B')
j = OrthogonalLine(A, h)
g = Line(A, B)
i = OrthogonalLine(B, g)
S = Intersect(i, j)
d = Circle(S, A)
X = Point(d)
δ = Angle(A, X, A')
r = Segment(A, X)
s = Segment(X, A')
text3: "2. \;  o:  \text{ oblúk}=(S,r=SA); \; ∡AXB=" + (LaTeX[α]) + ""
c = Circle(B, b)
F = Point(c)
q = Segment(B, F)
text4: "3. \text{ Kružnica } k=(B,r=" + (LaTeX[b]) + ")"
u = Vector(B, F)
C = Intersect(d, c, 2)
C_{1}: C
k = Line(C_{1}, g)
l = Line(B, C_{1})
m = Line(A, l)
D = Intersect(k, m)
q1, a_1, b_1, c_1, d_1 = Polygon(A, B, C_{1}, D)
n = Line(D, B)
p = Line(A, C_{1})
O = Intersect(n, p)
γ = Angle(A, O, B)