Samacheer Kalvi Class 4 Maths Solutions Term 3 Chapter 1 Geometry Exercise 1.1

Tamilnadu Samacheer Kalvi 4th Maths Solutions Term 3 Chapter 1 Geometry Ex 1.1

Question 1. Write the shape of the patterns present in the picture given below
(i)Answer: Spiral. Spirals are common patterns found in nature, like in seashells or whirlpools, showing a curve that keeps winding away from a central point.
In simple words: The picture shows a spiral shape, which looks like a curved line winding outwards from the middle.
(ii)Answer: Circle. Many objects around us, from coins to clock faces, show circular patterns.
In simple words: The picture has patterns that are shaped like circles.

🎯 Exam Tip: When identifying shapes, pay attention to their fundamental characteristics like curvature and radial symmetry. Knowing basic geometric shapes helps in recognizing patterns.

Question 2. Complete the patterns given below.
(i) 이이이__
Answer: 이이이이이. This pattern repeats the '이' character, which is the basic building block here.
In simple words: The pattern is made of the '이' shape repeated. So, to complete it, we add more '이's.
(ii) ⚫⚫⚪⚪__
Answer: ⚫⚫⚪⚪⚫⚫⚪⚪. The pattern repeats with two large black circles followed by two small white circles.
In simple words: The pattern is two big dots, then two small dots. To complete it, we repeat this 'big-big-small-small' pattern.
(iii) 🔴🟢🔵__
Answer: 🔴🟢🔵🔴🟢🔵🔴🟢🔵. This pattern consists of a red, green, and yellow circle repeating in that specific order.
In simple words: The pattern is red, green, yellow. So we just keep repeating these three colors.
(iv) 🔵🔶__
Answer: 🔵🔶🔵🔶🔵🔶. The pattern is a blue circle followed by a yellow circle, which repeats.
In simple words: The pattern is blue, then yellow. So we repeat blue and yellow.

🎯 Exam Tip: For simple repeating patterns, identify the smallest repeating unit (the 'rule') and then add it to finish the sequence. Pay attention to the order, colors, and sizes of elements.

Question 3. Draw simple rangoli. Use your own creativity to fill them.
Answer:This simple rangoli design is made with geometric shapes and patterns, commonly seen in traditional Indian art. Creating rangoli involves symmetry and repetition, which are core concepts in geometry.
In simple words: A simple rangoli uses dots and lines to make pretty designs, often with many petals or shapes around a center point.

🎯 Exam Tip: Rangoli designs often use repeating patterns and symmetry. Practicing these can help understand geometric concepts better.