NCERT Solutions with NCERTplanet
NCERT Solutions with NCERTplanet
Class 9 – Mathematics Areas of Parallelograms and Triangles – Exercise 9.1 Exercise 9.1 Question :1 : Which of the following figures lie on the same base and between the same parallels? In such a case, write the common base…
Class 9 – Mathematics Quadrilaterals – Exercise 8.1 Exercise 8.1 Question : 1: The angles of quadrilateral are in the ratio 3: 5: 9: 13. Find all the angles of the quadrilateral. Answer : Let the common ratio between the…
Class 9 – Mathematics Triangles – Exercise 7.5 Exercise 7.5 Question : 1 : ABC is a triangle. Locate a point in the interior of Δ ABC which is equidistant from all the vertices of Δ ABC. Answer : Given,…
Class 9 – Mathematics Triangles – Exercise 7.4 Exercise 7.4 Question : Show that in a right angled triangle, the hypotenuse is the longest side. Answer : Let us consider ΔABC such that ∠B = 900 So, ∠A +…
Class 9 – Mathematics Triangles – Exercise 7.3 Exercise 7.3 Question : 1 : Δ ABC and Δ DBC are two isosceles triangles on the same base BC and vertices A and D are on the same side of BC (see…
Class 9 – Mathematics Triangles – Exercise 7.2 Exercise 7.2 Question : 1 : In an isosceles triangle ABC, with AB = AC, the bisectors of ∠ B and ∠ C intersect each other at O. Join A to O.…
Class 9 – Mathematics Triangles – Exercise 7.1 Exercise 7.1 Question : 1 In quadrilateral ACBD,AC = AD and AB bisects ∠ A (see Fig. 7.16). Show that Δ ABC ≅Δ ABD. What can you say about BC and BD? Answer…
Class 9 – Mathematics Lines And Angles – Exercise 6.3 Exercise 6.3 Question : 1 In the figure, sides QP and RQ of ∆ PQR are produced to points S and T respectively. If ∠SPR = 1350 and ∠PQT = 1100, find…
Class 9 – Mathematics Lines And Angles – Exercise 6.2 Exercise 6.2 Question : 1: In the figure, find the values of x and y and then show that AB || CD. Answer : In the given figure, a transversal…
Class 9 – Mathematics Lines And Angles – Exercise 6.1 Question :1 : In the figure lines AB and CD intersect at O. If∠ AOC + ∠ BOE = 700 and ∠ BOD = 400,find ∠ BOE and reflex ∠…
Class 9 – Mathematics Introduction to Euclids Geometry – Exercise 5.2 Exercise 5.2 Question :1 : How would you rewrite Euclid’s fifth postulate so that it would be easier to understand? Answer : When two lines are cut by a…
Class 9 – Mathematics Introduction to Euclids Geometry – Exercise 5.1 Exercise 5.1 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…
Class 9 – Mathematics Linear Equations in Two Variables – Exercise 4.4 Exercise 4.4 Question : Give the geometric representations of y = 3 as an equation (i) in one variable (ii) in two variables Answer : Given, equation is:…
Class 9 – Mathematics Linear Equations in Two Variables – Exercise 4.3 Question : Draw the graph of each of the following linear equations in two variables: (i) x + y = 4 (ii) x – y = 2 (iii)…
Class 9 – Mathematics Linear Equations in Two Variables – Exercise 4.2 Exercise 4.2 Question : Which one of the following options is true, and why? y = 3x + 5 has (i) a unique solution, (ii) only two solutions,…
Class 9 – Mathematics Linear Equations in Two Variables – Exercise 4.1 Exercise 4.1 Question : The cost of a notebook is twice the cost of a pen. Write a linear equation in two variables to represent this statement. (Take…
Class 9 – Mathematics Coordinate Geometry – Exercise 3.3 Exercise 3.3 Question :1. Represent the following points (3, −1), (−2, 4), (1, 2), (−1, 0) and (−3, −5) on a Cartesian plane and also tell in which quadrant do they…
Class 9 – Mathematics Coordinate Geometry – Exercise 3.2 Exercise 3.2 Question : Answer the following questions: (i) Name the horizontal and the vertical lines drawn to determine the position of any point in the Cartesian plane? (ii) Name each…
Class 9 – Mathematics Coordinate Geometry – Exercise 3.1 Exercise 3.1 Question :1. How will you describe the position of a mobile phone kept on the study table to another person? Answer : For describing the position of a mobile…
Class 9 – Mathematics Polynomials – Exercise 2.3 Exercise 2.3 Question : Find the remainder when x3 + 3×2 + 3x + 1 is divided by (i) x + 1 (ii) x – 1/2 (iii) x (iv) x + π …