# In a quadrilateral ABCD, sides AB and BC are equal and sides AD and CD are equal

October 9, 2021 | education

| **In a quadrilateral ABCD, sides AB and BC are equal and sides AD and CD are equal, BC = 29cm, and CD is 15cm larger than AB. find the perimeter of this quadrilateral**

1 action.

Find the CD side. To do this, add 15 cm to the BC side, since BC is equal to the AB side, add 15 cm, according to the condition, 15 cm more.

29 + 15 = 44 cm.

2 action.

Find the perimeter of the rectangle. The perimeter is the sum of all the sides of the polygon.

AB = BC = 29 cm.

AD = CD = 44 cm.

29 + 29 + 44 + 44 = 146 cm.

Answer: The perimeter of the rectangle is 146 cm.

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