#### Chapters

## Chapter 1: Geometry

### Samacheer Kalvi solutions for Mathematics Term 1 - Class 4th Tamil Nadu State Board Chapter 1 Geometry Exercise 1.1 [Page 3]

Write the name of shape in the following picture

Write the name of shape in the following picture.

i | Write the number of squares and triangles in the given picture | |

ii | Write the number of rectangles and triangles in the given picture | |

iii | Identify the shapes and write the names in the boxes given below. | |

### Samacheer Kalvi solutions for Mathematics Term 1 - Class 4th Tamil Nadu State Board Chapter 1 Geometry Exercise 1.2 [Page 6]

#### Fill in the blanks

All closed four sided figure are called ______________.

A ______________ has four equal sides and equal diagonals

The opposite sides of a ______________ are equal.

A _____________ has no sides.

Diagonals are equal in ____________ and ____________.

Write the name of the sides and diagonals.

### Samacheer Kalvi solutions for Mathematics Term 1 - Class 4th Tamil Nadu State Board Chapter 1 Geometry Exercise 1.3 [Page 7]

Draw circle for the following measurement.

6 cm

Draw circle for the following measurement.

5.5 cm

Draw circle for the following measurement.

8 cm

Draw circle for the following measurement.

6.8 cm

Draw circle for the following measurement.

8.6 cm

### Samacheer Kalvi solutions for Mathematics Term 1 - Class 4th Tamil Nadu State Board Chapter 1 Geometry Exercise 1.4 [Pages 8 - 9]

#### Fill in the blanks

All the radii of a circle are _______________

The ______________ is the longest chord of a circle

A line segment joining any point on the circle to its center is called the _____________ of the circle

A line segment with its end points on the circle is called a ______________

Twice the radius is ________________

Find the diameter of the circle

Radius = 10 cm

Find the diameter of the circle

Radius = 8 cm

Find the diameter of the circle

Radius = 6 cm

Find the radius of the circle

Diameter = 24 cm

Find the radius of the circle

Diameter = 30 cm

Find the radius of the circle

Diameter = 76 cm

### Samacheer Kalvi solutions for Mathematics Term 1 - Class 4th Tamil Nadu State Board Chapter 1 Geometry Exercise 1.5 [Page 11]

Find the perimeter of the following figure

Find the perimeter of the following figure

Find the perimeter of the following figure

Find the perimeter of the following figure

Find the perimeter of the following figure

#### Solve the following.

A side of a square-shaped sandbox in Gandhi Park measures 30 cm. Determine the perimeter of the sandbox

Find the perimeter of a rectangle, whose sides are 12 cm and 8 cm

Find the perimeter of the triangle, whose sides are 13 cm, 5 cm and 14 cm

The adjacent sides of a parallelogram are 6 cm and 7 cm. What is the perimeter of the parallelogram?

The sides of a trapezoid measure 8 cm, 7 cm, 4 cm and 5 cm respectively. What is the perimeter of the trapezoid?

### Samacheer Kalvi solutions for Mathematics Term 1 - Class 4th Tamil Nadu State Board Chapter 1 Geometry Exercise 1.6 [Page 14]

Fill the following diagram with appropriate tile

Fill the following diagram with appropriate tile

### Samacheer Kalvi solutions for Mathematics Term 1 - Class 4th Tamil Nadu State Board Chapter 1 Geometry Exercise 1.7 [Page 17]

#### Choose the correct answer

A cuboid has ______________ edges

6

8

12

The shape of a dice is like a _______________

cuboid

cube

sphere

A _____________ has a curved surface and two plane faces

cylinder

cone

sphere

I have one vertex and one plane face. I am a _______________

cone

cylinder

sphere

A cube has _______________ vertices

8

12

6

## Chapter 1: Geometry

## Samacheer Kalvi solutions for Mathematics Term 1 - Class 4th Tamil Nadu State Board chapter 1 - Geometry

Samacheer Kalvi solutions for Mathematics Term 1 - Class 4th Tamil Nadu State Board chapter 1 (Geometry) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the Tamil Nadu Board of Secondary Education Mathematics Term 1 - Class 4th Tamil Nadu State Board solutions in a manner that help students grasp basic concepts better and faster.

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Concepts covered in Mathematics Term 1 - Class 4th Tamil Nadu State Board chapter 1 Geometry are Two Dimensional Shapes, How to Draw a Circle Using a Compass, Concept of Circle - Centre, Radius, Diameter, Arc, Sector, Chord, Segment, Semicircle, Circumference, Interior and Exterior, Concentric Circles, Perimeter of a Rectangle, Perimeter of Squares, Perimeter of Triangles, Perimeter of Polygon, Creating Objects by Combining Different 2d Shapes, Three Dimensional Shapes.

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