CBSE Class 4 Maths Shapes And Patterns Worksheet Set 01

TOPIC: SHAPES AND PATTERNS

Question 1. Colour the following polygons: Triangles in - blue, Circles-red, Rectangles - yellow, Squares - brown, Quadrilateral - green
Answer: Identify the geometric shapes in the picture and apply the specified colors:
- Triangles (such as the tree crowns and roof peaks) should be coloured blue.
- Circles (such as the sun and car wheels) should be coloured red.
- Rectangles (such as the main building walls and windows) should be coloured yellow.
- Squares (such as specific window panes if square-proportioned) should be coloured brown.
- Quadrilaterals (such as the kite, car body, and slanted roof sections) should be coloured green.
In simple words: Identify each shape in the drawing and colour it according to the given colour rule.

Exam Tip: Remember that a quadrilateral is any four-sided polygon, which includes rectangles, squares, rhombuses, and trapeziums.

Question 2(1). Write down the radius of the circle with the following diameter: Diameter = 24
Answer: Radius = \(\frac{\text{Diameter}}{2}\)
Radius = \(\frac{24}{2} = 12\)
In simple words: The radius is always half of the diameter.

Exam Tip: Use the formula \(\text{Radius} = \text{Diameter} \div 2\) for all circle problems.

Question 2(2). Write down the radius of the circle with the following diameter: Diameter = 36 cm
Answer: Radius = \(\frac{\text{Diameter}}{2}\)
Radius = \(\frac{36}{2} = 18\text{ cm}\)
In simple words: Divide 36 by 2 to get 18 cm.

Exam Tip: Always include the correct unit of measurement (cm) in your final answer when given in the question.

Question 2(3). Write down the radius of the circle with the following diameter: Diameter = 4 cm
Answer: Radius = \(\frac{\text{Diameter}}{2}\)
Radius = \(\frac{4}{2} = 2\text{ cm}\)
In simple words: Half of 4 cm is 2 cm.

Exam Tip: Double-check your division to ensure accurate calculations.