AREA OF PARALLELOGRAMS AND TRIANGLES MATHS PROJECT BY Sarita Kumari,CLASS IX

PLANAR REGION AND CONGRUENT FIGURES PLANAR REGION- The part of the plane enclosed by simple closed figure is called a planar region. CONGRUENT FIGURES- Two figures are called congruent, if they have the same shape and the same size.

PARALLELOGRAMS 1.Parallelograms on the same base and the between the same parallels are equal in area. 2.Adiagonal of a parallelogram divides it into two triangles of equal area. 3.Parallelograms and a rectangle on the same base and between the same parallels are equal in area.

PARALLELOGRAMS 4.The area of a parallelogram is the product of its base and the corresponding altitude. 5.The area of a triangle is half he product of any of its side and the corresponding altitude. 6.If a triangle and a parallelogram are on the same base and between he same parallels,the area of the triangle is equal to half of he parallelogram.

TRIANGLES 1.Triangles on the same base and between the same parallels are equal in area. 2.Triangles having equal areas and having one side of one of the triangles equal to one side of the other have their corresponding altitudes equal. 3.Two triangles having the same base and equal areas lie between the same parallels.

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