Ex 14.1 Class 9 Maths Question 1.Give five examples of data that you collect from your day-to-day life.Solution:Following are the five examples which are related to day-to-day life : Ex 14.1 Class 9 Maths Question 2.Classify the data in Q.1 above…
Ex 13.1 Class 9 Maths Question 1.A plastic box 1.5 m long, 1.25 m wide and 65 cm deep is to be made. It is opened at the top. Ignoring the thickness of the plastic sheet, determine(i) The area of…
Ex 12.1 Class 9 Maths Question 1.A traffic signal board, indicating ‘SCHOOL AHEAD’, is an equilateral triangle with side a. Find the area of the signal board, using Heron’s formula.If its perimeter is 180 cm, what will be the area…
Ex 11.1 Class 9 Maths Question 1.Construct an angle of 90° at the initial point of a given ray and justify the construction.Solution:Steprf of Construction:Step I : Draw AB¯¯¯¯¯¯¯¯.Step II : Taking O as centre and having a suitable radius, draw…
Ex 10.1 Class 9 Maths Question 1.Fill in the blanks.(i) The centre of a circle lies in ___ of the circle. (exterior/interior)(ii) A point, whose distance from the centre of a circle is greater than its radius lies in ____…
Ex 9.1 Class 9 Maths Question 1Which of the following figures lie on the same base and between the same parallels. In such a case, write the common base and the two parallels.Solution:The figures (i), (iii) and (v) lie on…
Ex 8.1 Class 9 Maths Question 1.The angles of quadrilateral are in the ratio 3 : 5 : 9 : 13. Find all the angles of the quadrilateral.Solution:Let the angles of the quadrilateral be 3x, 5x, 9x and 13x.∴ 3x +…
Ex 7.1 Class 9 Maths Question 1.In quadrilateral ACBD, AC = AD and AB bisects ∠ A (see figure). Show that ∆ABC ≅ ∆ABD. What can you say about BC and BD?Solution:In quadrilateral ACBD, we have AC = AD and AB…
Maths Question 1In figure, lines AB and CD intersect at 0. If ∠AOC + ∠BOE = 70° and ∠BOD = 40°, find ∠BOE and reflex ∠COE.Solution:Since AB is a straight line,∴ ∠AOC + ∠COE + ∠EOB = 180°or (∠AOC + ∠BOE)…
Ex 5.1 Class 9 Maths Question 1.Which of the following statements are true and which are false? Give reasons for your answers.(i) Only one line can pass through a single point.(ii) There are an infinite number of lines which pass through…