Samacheer Kalvi 7th Maths Solutions Term 3 Chapter 4 Geometry Additional Questions
Samacheer Kalvi 7th Maths Solutions Term 3 Chapter 4 Geometry Additional Questions
Tamilnadu Samacheer Kalvi 7th Maths Solutions Term 3 Chapter 4 Geometry Additional Questions
Additional Questions and Answers
Exercise 4.1
Question 1.
Give some examples of shapes with no line of symmetry.
Solution:
1. A scalene Triangle
2. The letter F
Question 2.
What is the order of rotational symmetry of the letter N?
Solution:
2
Exercise 4.2
Question 1.
Construct a circle of radius 5.2 cm with center ‘O’.
Solution:
Step 1: Market a point‘O’on the paper.
Step 2: Extended the compass distance equal to radius 5.2 cm.
Step 3: At center ‘O’, held the compass firmly and placed the pointed end of the compass.
Step 4: Slowly rotated the compass around to get the circle.
Question 2.
Draw concentric circles with radii 5.2cm and 6.6cm. Find the width of the circular ring.
Solution:
Step 1: Drawn a rough diagram and marked the given measurements Taken any
Step 2: Take any point O and marked it as the center.
Step 3: With O as center, drawn a circle of radius OA = 5.2 cm.
Step 4:With O as center, drawn a circle of radius OB = 6.6 cm. Thus the concentric circles C1 and C2 are drawn.
Width of the circular ring = OB – OA = 6.6 – 5.2 = 1.4 cm
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