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Sagot :
All the angles from the polygon path made by the students are;
∠1 = 96°
∠2 = 90°
∠3 = 162°
∠4 = 132°
∠5 = 60°
The images of the polygon are missing and so i have attached them.
- From the attached image, we can see we have;
Triangle (3 sided polygon)
Square ( 4 sided polygon)
Pentagon (5 sided polygon)
Hexagon (6 sided polygon)
Now, we know that formula for external angle of a polygon with n sides is 360/n.
- Thus, for the 6-sided polygon, the ∠5 = 360/6
∠5 = 60°
- Since ∠4 is shared by the pentagon and hexagon, then;
∠4 = (360/5) + 60
∠4 = 72° + 60°
∠4 = 132°
- Since ∠3 is shared by the square and pentagon, then;
∠3 = 90 + 72
∠3 = 162°
- ∠2 = 90° because external angles of a square = 360/4 = 90°
The polygon 12345 is a 5 sided polygon and as such;
Sum of interior angles = 180(n - 2)
⇒ 180(5 - 2) = 540°
Thus;
∠1 + ∠2 + ∠3 + ∠4 + ∠5 = 540°
Plugging in the relevant values, we have;
∠1 + 90 + 162 + 132 + 60 = 540
∠1 + 444 = 540
∠1 = 540 - 444
∠1 = 96°
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