Section - I
I Solve any seven of the following:
1) Write two pairs of congruent objects, you use dail
2)Name some natural objects with faces which have at leas
3)Define congruent figures,
- 4)Find the area of rectangle whose length is 20cm, breadth
5)Divide
shape into three rectangles
6)Draw any two tessellations.
7)Find the area of triangle whose base is 5cm and Height
8)Find the product of the 6,7k pair.
5x
9)Complete the table of the products 3x
15
4y
X
Section - 11
Answers
Answer:
1)Books. Bangles. Boxes having the same dimensions
2)Some natural objects with faces which have at least one line of symmetry are tree trunk, the sum, the moon, the stars etc.
3)In geometry, two figures or objects are congruent if they have the same shape and size, or if one has the same shape and size as the mirror image of the other.
4)Given :
⬤ Length of Rectangle is 20 cm .
⬤ Breadth of Rectangle is 15 cm .
To Find :
⬤ Area of Rectangle .
Formula Used :
l = Length
b = Breadth
Solution :
Length = 20 cm .
Breadth = 15 cm .
According to the Formula :-
l × b
20 × 15
300
Therefore , The Area of Rectangle is 300 cm² .
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Related Formulas :
Area of Rectangle = l × b
Perimeter of Square = 4 × Side
Perimeter of Rectangle = 2 (l + b)
Area of Square = Side × Side
Diagonal of Rectangle = √l² + b²
Area of Triangle = 1/2 × b × h
Area of Parallelogram = b × h