Download - Quadrilateral (Segi Empat)
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Quadrilateral
1. Saraswati Nirmala Suci (24)2. Indah Arfina Maharani (13)3. Regita Mulia Winjari (22)4. Repo Nursaputra (23)
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KITEFigure of a Kite
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Understanding Kite
A kite is formed by combining two isosceles triangles whose bases are equal in length and coincident.
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The Properties of Kite
1. Has one axis of symmetry2. A pair of opposite angles equal3. Diagonal perpendicular berpotongn4. An angle equal to the diagonal split5. Can occupy the frame with two way6. Two pairs of adjacent sides of equal length
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Formula for the area of a kiteArea of a kite = ½ diagonal x (the other) diagonalExample
D1 = 5 cmD2 = 7 cm
So, the area is (5 × 7) = 35 = 17.5 cm2 2
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Formula for the Perimeter of a Kite
Perimeter = Side + side + side + sideExample
AAB = AD = 4 cm
B D BC = CD = 6 cm
C
So, perimeter of kite ABCD is 4 + 4 + 6 + 6 = 20 cm.
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Rhombus
Figure of a Rhombus
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Understanding RhombusA rhombus is formed by
combining an isosceles triangle and its image which is reflected in respect to the base of the triangle.
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The Properties of Rhombus
All sides of a rhombus are equal in length,each of the two diagonals in every rhombus is an axis of symmetry,in every rhombus the opposite interior angles are equal in measure and are bisected by the diagonals.
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Formula for the Area and Perimeter of a Rhombus
Area = ½ diagonal x (the other) diagonalPerimeter = Side + side + side + sideExample A
B D AB = BC = CD = DA = 5 cmAC = 7 cm
C BD = 9 cm
Area = (7 × 9) : 2 = 31.5 cmPerimeter = 4 (5) = 20 cm
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SquareFigures of a Square
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Understanding Square
Square is figures whose each interior angle fit into the position of their other angle and that can fit their frame in eight ways.
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The Properties of Square
• All four sides equal in length• Large number of corner angle of 360 degrees• The two diagonals intersect perpendicularly
bisects the length and• Four sides is a right angle elbow
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Formula for the Area and Perimeter of a Square
Area = Side × sidePerimeter = 4 × side
Example
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Any Question?
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Thanks For Your Attention