Show notes for teachers

Ask students to make the complementary/
 supplementary angle by moving the angles. 
Students will make the vertex coincide/ one 
end of the segment coincide,  
Discuss all the misconceptions that arise.
Make sure you rotate both angles to show 
right angle need not be formed parallel to x-axis

(complementarity is a geometric concept and not merely arithmetic concept)

Author- Shriranjani, IT For Change, Bengaluru
License- CC BY SA 4.0

A = (2.5272727272727273, 4.5163636363636375)
B = (11.127272727272727, 4.68)
f = Segment(A, B)
α = 0 rad (slider from 0 to 80°, step 0.017453292519943295)
C = Rotate(B, α, A)
β = Angle(B, A, C)
g = Segment(A, C)
D = (2.5454545454545454, 4.516363636363635)
E = (8.836363636363636, 6.898181818181817)
h = Segment(D, E)
F = Rotate(E, 90° - β, D)
γ = Angle(E, D, F)
i = Segment(D, F)
a = false
Curve(x) = ?

Tool: SquareTool
Tool2[ <Number>, <Point> ]
Input: side, A
Output: poly1

B = Point(Circle[A, side])
a = Segment(A, B)
c = Circle(A, side)
b = OrthogonalLine(A, a)
C = Intersect(c, b, 2)
d = Circle(C, side)
e = OrthogonalLine(C, b)
D = Intersect(d, e, 1)
poly1, a_1, b_1, d_1, c_1 = Polygon(A, B, D, C)