Square, rectangle, and its properties

Square and Rectangle

1. SQUARE, RECTANGLE, AND THEIR PROPERTIES

2. Square or Rectangle? Football field Chessboard F loor tile Blackboard

3. What do you think about rectangle and square?

4. RECTANGLE

5. A B C D The Properties of A Rectangle Opposite sides of a rectangle are parallel and have the same length. AB CD and AB = CD AD BC and AD = BC All four angles of a rectangle are right angles ( 90 °).  A =  B =  C =  D = 90°. Two diagonals of a rectangle are the same length. AC = B D Based on the properties of a rectangle on above, then: A rectangle is a quadrilateral with four right angles and the length of the opposite sides are same.

6. Circumference of a rectangle is the length of the outer lines on the rectangle or the sum of all sides of the rectangle. This picture shows square KLMN with the sides are KL, MN, KN, and LM. KL = NM = p LM = KN = l Circumference of A Rectangle p l Circumference of KLMN = KL + LM + NM + KN = (5 + 3 + 5 + 3) units of length = 16 units of length So, circumference of a rectangle with the length p and the width l is Circumference of a rectangle = 2 p + 2 l = 2( p + l )

7. Area of a rectangle is a measure of how much area or field that is in the rectangle or the multiplication between the two sides of rectangle. Area of A Rectangle Area of KLMN = KL x LM = (5 x 3) units of area = 15 units of area So, area of a rectangle with the length p and the width l is Area of a rectangle = p x l p l

8. SQUARE

9. The Properties of A Square All sides of a square are the same length. AB = CD = AD = BC Square has two pairs of parallel sides and have the same length . AB CD and AB = CD AD BC and AD = BC All four angles of a square are right angles ( 90 °).  A =  B =  C =  D = 90°. Two diagonals of a square are the same length. AC = B D Based on the properties of the square on above, then: A square is a rectangle that all four sides the same length. A B C D

10. Circumference of a square is the length of the outer lines on the square or the sum of all sides of the square. This picture shows square KLMN with the sides (s) are KL, MN, KN, and LM. Circumference of A Square Circumference of KLMN = KL + LM + MN + NK = (4 + 4 + 4 + 4) units = 16 units of length Generally, circumference of a square with the length of side s is Circumference of a square = s + s + s+ s = 4 x s

11. Area of a square is a measure of how much area or field that is in the square or the multiplication between the two sides of square. Area of A Square Area of KLMN = KL x LM = (4 x 4) units of area = 16 units of area So, area of a square with the length of side s is Area of a square = s x s = s 2

12. Calculate the perimeter and area of a f ootball field? The floor of a room shaped like a square with the length of each sides are 300 cm. The floor will be covered by floor tile that shaped like a square and the length of each sides of floor tile are 30 cm. What is the floor tile needed to cover the floor of the room? EXERCISE 120 cm 90 cm