1. How many angles are there?

Step 1: Q1

2. How many are inside the triangle?
How many are outside the triangle?

Step 2: Q2

Step 3: Show label for interior angle

Step 4: Show label for vertically opp angle

Step 5: Show exterior angle

4. Is there one more exterior angle possible?
How many angle pairs are there?

Step 6: Show the second ext angle

3. What is the sum of angles? 
Will it be same for any triangle? Verify.

Step 7: Show sides

5. Which is the largest side?
Which is the largest angle? 
Any connection?

Step 8

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

B = (4.92, 4.36)
C = (2, 6)
D = (-2, 0.78)
E = (4.64, 0.14)
c = Line(D, E)
I = Point(c)
g = false
h = false
i = false
A = (6.12, 5.86)
a = Line(A, B)
G = Intersect(c, a)
b = Line(C, B)
F = Intersect(c, b)
H = Point(b)
J = Point(a)
d = Segment(B, G)
e = Segment(G, F)
f = Segment(F, B)
α = Angle(F, G, B)
β = Angle(G, B, F)
γ = Angle(B, F, G)
δ = Angle(A, B, C)
ε = Angle(D, G, J)
ζ = Angle(H, F, I)
j = false
η = Angle(I, F, B)
θ = Angle(B, G, D)
ι = Angle(F, B, A)
k = false
κ = Angle(C, B, G)
λ = Angle(J, G, F)
μ = Angle(G, F, H)
l = false
distanceBG = Distance(B, G)
TextBG: "\overline{" + (Name[B]) + (Name[G]) + "} \, = \, " + distanceBG
distanceGF = Distance(G, F)
TextGF: "\overline{" + (Name[G]) + (Name[F]) + "} \, = \, " + distanceGF
distanceFB = Distance(F, B)
TextFB: "\overline{" + (Name[F]) + (Name[B]) + "} \, = \, " + distanceFB
m = false
n = false