Notes For All Chapters Maths Class 9 1. Circle: The collection of all points in a plane which are at a fixed distance from a fixed point in the plane is called a circle. The following examples of the circle are 2. Basic Definition Chord: Suppose, we take any two points on a circle, then the line segment […]
Notes For All Chapters Maths Class 9 1. Quadrilateral: A plane figure bounded by four lines segment AB, BC, CD and DA is called a quadrilateral. The sum of the angles of a quadrilateral is 360°. 2. Various Types of Quadrilaterals (i) Parallelogram: A quadrilateral in which opposite sides are parallel is called parallelogram and it is written as […]
Notes For All Chapters Maths Class 9 Linear Equations: Any equation which can be put in the form ax + by + c = 0, where a, b and c are real numbers and a and b are not both zero is called a linear equation in two variables. The solution of a linear equation is […]
Notes For All Chapters Maths Class 9 1. Cartesian System: The system used to describe the position of a point in a plane is called the cartesian system. In a cartesian system, there are two perpendicular lines and a point is located by referring them. The horizontal line XX’ is called X-axis and vertical line YY’ is […]
Notes For All Chapters Maths Class 9 1. Triangle: A closed figure formed by three intersecting lines is called a triangle (‘Tri’ means ‘three’). A triangle has three sides, three angles and three vertices. e.g., In triangle ABC, denoted as ∆ABC. AB, BC, CA are the three sides, ∠A, ∠B, ∠C are the three angles and A, […]
Notes For All Chapters Maths Class 9 1. Axioms or Postulates: Axioms or postulates are the assumptions which are obvious universal truths. They are not proved. Mainly postulates are used for especially geometry and axioms are used for especially algebra. 2. Theorems: Theorems are statements which are proved using ‘ definitions, axioms, previously proved statements and deductive reasoning. 3. Euclid’s […]
Q:1 Linear Equations in Two Variables, RS Aggarwal Solutions – Class 9th Maths Ch 4 Q:2 Linear Equations in Two Variables, RS Aggarwal Solutions – Class 9th Maths Ch 4
“Q: 1, 2 & 3” Sample Paper For Class 9 Maths Exam – 2019 “Q: 4 & Q: 5” Sample Paper For Class 9 Maths Exam – 2019 “Q: 6” Sample Paper For Class 9 Maths Exam – 2019 “Q: 7” Sample Paper For Class 9 Maths Exam – 2019 “Q: 8” Sample Paper For […]
Important Questions for Class 9 Maths – CBSE Board All Formulas For Maths Class 9 – CBSE Board “Q: 1” Sample Paper For Class 9 Maths Exam – 2019 “Q: 2” Sample Paper For Class 9 Maths Exam – 2019 “Q: 3” Sample Paper For Class 9 Maths Exam – 2019 “Q: 4” Sample Paper […]
Page 16.5 Ex. 16.1 Q1. Answer : (i) All points lying inside or outside a circle are called interior points or exterior points. Let the point P, Q and R are lie inside, outside or on the circle C(O, r) in such a way as given in the figure Thus the answer is (ii) Given […]
Page 12.8 Ex. 12.1 Q1. Answer : Whenever we are given the measurement of all sides of a triangle, we basically look for Heron’s formula to find out the area of the triangle. If we denote area of the triangle by A, then the area of a triangle having sides a, b, c and s […]
Page. 15.3 Ex.15.1 Q1. Answer : GIVEN: Here in the question figure 1 to 6 are shown. To Find : (1) The figures which lie on the same base and between the same parallels. (2) Write the common base and parallels. As we know that ‘Two geometric figures are said to be on the same […]
Page 14.4 Ex. 14.1 Q1. Answer : Let the measure of the fourth angles be x°. We know that the sum of the angles of a quadrilateral is 360°. Therefore, Hence the measure of the fourth angle is . Q2. Answer : We have ,. So, let , , And By angle sum property of […]
Page 13.3 Ex. 13.1 Q1. Answer : (i) We are given –2x + 3y – 12 = 0 Comparing the given equation with ,we get a=–2; b = 3; c = –12 (ii) We are given Comparing the given equation with ,we get (iii) We are given Comparing the given equation with ,we get (iv) We are given Comparing the given equation with ,we get (v) We […]
Page 11.6 Ex. 11.1 Q1. Answer : The following points are given below. (i) (ii) (iii) (iv) (v) (vi) (vii) (viii) (ix) (x) Letand be the coordinate axes. (i) Here for the given point the abscissa is 2 units and ordinate is 5 units. The point is in the first quadrant. So it will look like […]
Page 1.12 Ex. 1.2 Q1. Answer : (i) Given rational number is Now we have to express this rational number into decimal form. So we will use long division method as below. Hence, (ii) Given rational number is Now we have to express this rational number into decimal form. So we will use […]
Page no. 25.16 Formative Assessment_VSA Q1. Answer : What is the meaning of trial? The word trial means a test of performance, qualities, or suitability. Definition: Any particular performance of a random experiment is called a trial. That is, when we perform an experiment it is called a trial of the experiment. By experiment or trial, […]
Page no. 7.8 Ex. 7.1 Q1. Answer : The given problem requires definitions of various terms. (i) Line segment: A line segment AB can be defined as the part of the line with end points A and B, whereA and B are the two points of the line. It is denoted by Let us take a line […]
Algebraic Identities Page no. 4.11 Ex. 4.2 Q1. Answer : In the given problem, we have to find expended form (i) Given We shall use the identity By applying in identity we get Hence the expended form of is (ii) Given We shall use the identity Here By applying in identity we get Hence the […]