Types Of Angle

Straight Angle

Right Angle

Acute Angle

Obtuse Angle

Reflex Angle

Complete Angle

0° < ∠AOB < 90^0

90^0 < ∠AOB < 180^0

180^0 < ∠AOB < 360^0

Author- Ganesh Shettigar, GHS, Kalavara
License- CC BY SA 4.0

α = 1.6929693744344996 rad (slider from 0 to 6.283185307179586, step 0.017453292519943295)
O = (-1.734, -4.634)
B = (9.30758, -4.52796)
a = Segment(O, B)
A = Rotate(B, α, O)
β = Angle(B, O, A)
b = Segment(A, O)
text12: "$ ∠AOB = " + (LaTeX[α]) + " $"

Tool: centroid
Input: A, B, C
Output: G

D = Midpoint(B, C)
F = Midpoint(A, C)
d = Ray(A, D)
e = Ray(B, F)
G = Intersect(d, e)