✏️ ANSWERS

No. of Sides

• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• 11
• 12
• n

No. of triangles formed by the diagonals drawn from a fixed vertex

• 3-2= 1
• 4-2= 2
• 5-2= 3
• 6-2= 4
• 7-2= 5
• 8-2= 6
• 9-2= 7
• 10-2= 8
• 11-2= 9
• 12-2= 10
• n-2

Sum of the Interior angles

• 1×180°= 180°
• 2×180°= 360°
• 3×180°= 540°
• 4×180°= 720°
• 5×180°= 900°
• 6×180°= 1,080°
• 7×180°= 1,260°
• 8×180°= 1,440°
• 9×180°= 1,620°
• 10×180°= 1,800°
• n-2= 180°

I hope it's helps