Topics
Number Systems
Number Systems
Algebra
Polynomials
Linear Equations in Two Variables
Coordinate Geometry
Geometry
Coordinate Geometry
Mensuration
Introduction to Euclid’S Geometry
Lines and Angles
 Introduction to Lines and Angles
 Basic Terms and Definitions
 Intersecting Lines and Nonintersecting Lines
 Parallel Lines
 Pairs of Angles
 Parallel Lines and a Transversal
 Lines Parallel to the Same Line
 Angle Sum Property of a Triangle
Statistics and Probability
Triangles
Quadrilaterals
 Concept of Quadrilaterals  Sides, Adjacent Sides, Opposite Sides, Angle, Adjacent Angles and Opposite Angles
 Angle Sum Property of a Quadrilateral
 Types of Quadrilaterals
 Another Condition for a Quadrilateral to Be a Parallelogram
 Theorem of Midpoints of Two Sides of a Triangle
 Property: The Opposite Sides of a Parallelogram Are of Equal Length.
 Theorem: A Diagonal of a Parallelogram Divides It into Two Congruent Triangles.
 Theorem : If Each Pair of Opposite Sides of a Quadrilateral is Equal, Then It is a Parallelogram.
 Property: The Opposite Angles of a Parallelogram Are of Equal Measure.
 Theorem: If in a Quadrilateral, Each Pair of Opposite Angles is Equal, Then It is a Parallelogram.
 Property: The diagonals of a parallelogram bisect each other. (at the point of their intersection)
 Theorem : If the Diagonals of a Quadrilateral Bisect Each Other, Then It is a Parallelogram
Circles
 Concept of Circle  Centre, Radius, Diameter, Arc, Sector, Chord, Segment, Semicircle, Circumference, Interior and Exterior, Concentric Circles
 Angle Subtended by a Chord at a Point
 Perpendicular from the Centre to a Chord
 Circles Passing Through One, Two, Three Points
 Equal Chords and Their Distances from the Centre
 Angle Subtended by an Arc of a Circle
 Cyclic Quadrilateral
Areas  Heron’S Formula
Surface Areas and Volumes
Statistics
Algebraic Expressions
Algebraic Identities
Area
Constructions
 Introduction of Constructions
 Basic Constructions
 Some Constructions of Triangles
Probability
Definition
Parallel lines: Two lines in a plane are said to be parallel if they do not meet. We use the symbol  to represent parallel lines.
Notes
Parallel Lines:
 When lines drawn on a sheet of paper do not meet, however far produced, we call them to be parallel lines.

Parallel lines are lines that never intersect.

The distance between the two parallel lines is fixed and the two lines are going in the same direction.

We use the symbol  to represent parallel lines.
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