Measure and write the length of the four sides of the top of your study table.
AB = ____ cm
BC = ____ cm
CD = ____ cm
DA = ____ cm
Now, the sum of the lengths of the four sides
= AB + BC + CD + DA
= ___ cm +___ cm +___ cm +___ cm
= _____ cm
What is the perimeter?
AB = 100 CM
BC = 60 CM
CD = 100 CM
DA = 60
AB+BC+CD+DA = 320 CM
AB = 100 cm
BC = 60 cm
CD = 100 cm
DA = 60 cm
AB + BC + CD + DA + AB = 320