Question

Find out five examples of polygon
from your surroundings and tabulate
item name, number of diagonals,
measurement of each angles and sum
of the angles.

Answer 1

1. Item name:  Rectangular wooden box

Number of diagonals = 2

Measurement of each angles = 90 degree

Sum  of the angles = $90^\circ+90^\circ+90^\circ+90^\circ = 360^\circ$

2. Item name: Square wall painting

Number of diagonals = 2

Measurement of each angles = 90 degree

Sum  of the angles = $90^\circ+90^\circ+90^\circ+90^\circ = 360^\circ$

3. Item name: Triangular sheet

Number of diagonals = 0

Measurement of each angles = 60 degree

Sum  of the angles = $60^\circ+60^\circ+60^\circ = 180^\circ$

4. Item name: Kite

Number of diagonals = 2

Measurement of each angle = 60, 80, 110, 110 degree

Sum  of the angles = $60^\circ+80^\circ+110^\circ+110^\circ = 360^\circ$

5. Item name: A paper cutting in the shape of trapezium

Number of diagonals = 2

Measurement of each angle = 60, 54, 120, 126 degree

Sum  of the angles = $60^\circ+54^\circ+120^\circ+126^\circ = 360^\circ$