Show line 1

Show line 2

Show line 3

How many angles are there? What is the total?

Show Question 1

Mark intersection points

Show points

Show segments

Measure angles

Measure exterior angle 1

Is there any relation between 
the exterior angle and angles in the triangle?

Measure exterior angle 2

Is there any relation between 
the exterior angle and angles in the triangle?

What can we say about these two lines?

Show angle 1

Show angle 2

Show angle 3

Show angle 4

Show side measures

A = (11, 5.061818181818183)
B = (8.309090909090909, 0.8436363636363636)
f = Line(A, B)
C = (3.836363636363635, 2.0254545454545445)
g = Line(C, B)
D = Point(g)
h = Line(A, D)
a = false
b = false
c = false
d = false
E = Intersect(f, g)
F = Intersect(f, h)
G = Intersect(g, h)
i = false
j = Segment(E, G)
k = Segment(G, F)
l = Segment(F, E)
m = false
n = false
α = Angle(E, F, G)
β = Angle(F, G, E)
γ = Angle(G, E, F)
H = Point(h)
δ = Angle(H, F, E)
I = Point(g)
o = false
ε = Angle(I, G, F)
p = false
ζ = Angle(f, g)
J = Point(g)
K = Point(f)
L = Point(f)
M = Point(g)
η = Angle(J, E, K)
θ = Angle(K, E, M)
ι = Angle(M, E, L)
e = false
q = false
r = false
s = false
distanceFE = Distance(F, E)
distanceFG = Distance(F, G)
distanceEG = Distance(E, G)
t = false
TextFG: "" + (Name[F] + (Name[G])) + " = " + distanceFG + ""
TextEG: "" + (Name[E] + (Name[G])) + " = " + distanceEG + ""
TextFE: "" + (Name[F] + (Name[E])) + " = " + distanceFE + ""

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)