Class 6 | Mathematics | Chapter 4| Basic Geometrical Ideas | Exercise 4.6 Question 1 : Take a circular sheet. Fold it into two halves. Crease the fold and open up. Do you find that the circular region is halved by the diameter? A diameter of a circle divides it into two equal parts; each part is a semi-circle. A semi-circle is half of a circle, with the end points of diameter … [Read more...] about Exercise 4.6

# Chapter 4 Basic Geometrical Ideas

## Exercise 4.5

Class 6 | Mathematics | Chapter 4| Basic Geometrical Ideas | Exercise 4.5 Question 1. Draw a rough sketch of a quadrilateral PQRS. Draw its diagonals. Name them. Is the meeting point of the diagonals in the interior or exterior of the quadrilateral? Answer 1 : Diagonal : PR and QS Diagonal meet at point O which is in the interior of quadrilateral … [Read more...] about Exercise 4.5

## Exercise 4.4

Class 6 | Mathematics | Chapter 4| Basic Geometrical Ideas | Exercise 4.4 Question 1. Draw a rough sketch of a triangle ABC. Mark a point P in its interior and a point Q in its exterior. Is the point A in its exterior or in its interior? Answer 1: Point A lies on ΔABC. Question 2. (a) Identify three triangles in the figure. (b) Write the names of seven angles. … [Read more...] about Exercise 4.4

## Exercise 4.3

Class 6 | Mathematics | Chapter 4| Basic Geometrical Ideas | Exercise 4.3 Question 1. Name the angles in the given figure. Answer 1: The angles in given figure are : ∠ABC, ∠ CDA, ∠DAB, ∠DCB Question 2. In the given diagram, name the point(s) (a) In the interior of ∠DOE (b) In the exterior of ∠EOF (c) On … [Read more...] about Exercise 4.3

## Exercise 4.2

Class 6 | Mathematics | Chapter 4| Basic Geometrical Ideas | Exercise 4.2 Question 1. Classify the following curves as (i) Open or (ii) Closed. Answer 1: (a) Open curve (b) Closed curve (c) Open curve (d) Closed curve (e) Closed curve Question 2. Draw rough diagrams to illustrate the following : (a) Open curve (b) Closed curve. Answer 2 : a) Open … [Read more...] about Exercise 4.2

## Exercise 4.1

Class 6 | Mathematics | Chapter 4| Basic Geometrical Ideas | Exercise 4.1 Question 1: Use the figure to name: (a) Five points (b) A line (c) Four rays (d) Five line segments Answer 1: (a) Five points are: O, B, C, D, E Question 2: Name the line given in all possible (twelve) ways, choosing only two letters at a time from the four … [Read more...] about Exercise 4.1