a_1 = 1.1 (slider from -5 to 5, step 0.1)
b_1 = 2.9 (slider from -5 to 5, step 0.1)
a_2 = 1.8 (slider from -5 to 5, step 0.1)
b_2 = 1.4 (slider from -5 to 5, step 0.1)
a: 1.0 * 1.0 y = a_1 * 1.0 * 1.0 x + b_1
b: 1.0 * 1.0 y = a_2 * 1.0 * 1.0 x + b_2
A = Intersect(b, a)
texte1: "Solution x : " + (x(A))
texte2: "Solution y :" + (y(A))

Tool: Outil1
Input: E, F, H
Output: γ

a = Segment(E, F)
G = Point(a)
α = Angle(E, G, H)
β = Angle(H, G, F)
γ: α + β