March 15, 2016 Grade 9, Lines and Angles, Math

Lines and Angles Angle is the amount of turn between two straight lines that have a common end point (the vertex). A line is a collection of points along a straight path that goes on and on in opposite directions. A line has no endpoints.Watch Lines Angles Videos to learn more. A true line in geometry […]

March 10, 2016 Grade 9, Lines and Angles, Math

SYMMETRY Symmetry is the quality of being made up of exactly similar parts facing each other or around an axis.Watch SYMMETRY VIDEO to learn more. Symmetry comes from a Greek word meaning ‘to measure together’ and is widely used in the study of geometry. Mathematically, symmetry means that one shape becomes exactly like another when you move […]

March 2, 2016 Grade 9, Lines and Angles, Math

Angle Made By A Transversal A line which intersects two or more given coplanar lines in distinct points is called a transversal of the given lines. The angle present in between that intersecting lines are angle made by a transversal. They have several properties are exists.To learn more about this watch Angle Made By A […]

March 2, 2016 Grade 9, Lines and Angles, Math

Definition Points are the sharp ended and a line is defined as something that extends infinitely in either direction but has no width and is one dimensional while a plane extends infinitely in two dimensions.To learn more watch Points and Lines Videos. Points and Lines A point is an exact position or location on a plane surface. A line has no […]

March 2, 2016 Grade 9, Lines and Angles, Math

Definition Two angles are called a pair of vertically opposite angles, if their arms form form two pairs of opposite rays.Watch Vertically Opposite Angles Video to learn more about it. Vertically Opposite Angles Vertical Angles are the angles opposite each other when two lines cross. They are always equal.Both pairs of vertical angles (four angles […]

March 2, 2016 Grade 9, Lines and Angles, Math

Definition Two adjacent angles are said to be form a linear pair of angles, if their non-common arms are two opposite rays. Linear pair axiom of theorems are if a ray stands on a line , then the sum of two adjacent angles so formed is 180 degree. And the second theorem is if the […]

March 2, 2016 Grade 9, Lines and Angles, Math

Intersecting, Non Intersecting And Concurrent Lines If two lines having a common point are said to intersect are called intersecting lines. If two lines are said to be non-intersecting if they do not have any common point. If three or more lines in a plane are concurrent if all of them pass through the same […]

February 18, 2016 Grade 9, Lines and Angles, Math

Definition of an angle An angle is formed by two rays with a common initial point. The common initial point is called the vertex. The rays forming an angle are called arms or sides of an angle. The definition of an angle and its different properties of forms are describing in Forming Of An Angle […]

February 5, 2016 Grade 9, Lines and Angles, Math

Definition Angles sum property of triangle is defined as the sum of the measures of the interior angles of a triangle is 180 degree. The Angle Sum Theorem gives an important result about triangles, which is used in many algebra and geometry problems. Angle Sum Property Of A Triangle Video explains about the theorem , that is […]