Maths
ANGLES PART VII
SPECIAL QUADRILATERALS Some quadrilaterals have special names. Each special name has a special property related to it. Note that you can often use these properties to find lengths and angles in qu…
Maths
ANGLES PART VI
ANGLE PROPERTY OF A QUADRILATERAL A quadrilateral is a polygon with four sides. A quadrilateral has four vertices and two diagonals. For any quadrilateral, the sum of the interior angles is 360°…
Maths
ANGLES PART V
TYPES OF TRIANGLE There are three types of triangle. EQUILATERAL TRIANGLE An equilateral triangle has: 1. All it's sides equal 2. All interior angles equal 60°. 3. Three lines of…
Maths
ANGLES PART IV
ANGLE PROPERTIES OF A TRIANGLE In the fig 28.6, a, b and c ate called interior angles of the triangle. 1. The sum of interior angles of a triangle is equal to 180°.ie. a+b+c = 180° 2. e is cal…
Maths
ANGLES PART III
PROPERTIES OF PARALLEL LINES The idea of parallel lines is very important in geometry. In Fig 18.4, AB and CD are two parallel lines. They are crossed by a slanting or oblique line EF, called a…
Maths
ANGLES PART II
VERTICALLY OPPOSITE ANGLES We have two lines crossing at 0 to make four angles. Angles a and c are said to be vertically opposite angles. Vertically opposite angles are equal. That's a=c a…
Maths
ANGLES PART I
Angles are formed when two lines meet. Acute angles are angles between 0° and 90°. Obtuse angles are angles between 90° and 180°. Reflex angles are angles between 180° and 360°. Complementary …
Maths
SCALE
A scale is used to reduce the actual distance between two points on a map . The scale of a map is an example of ratio. The ratio is often in the form 1: n. For example, 1: 50000 means 1 cm on the…
Maths
FINANCIAL PARTNERSHIP
In financial partnership, two or more people come together to invest in a business. Profits accruing from the investment are usually shared in proportion or ratio to the contributions of the partn…
Maths
RATIO AND PROPORTION PART IV
PROPORTION Proportion is another name for ratio or fraction and it is important that the same units are used. It is sometimes more useful to represent a proportion as a percentage. Example In…
Maths
RATIO AND PROPORTION PART III
INCREASING OR DECREASING A QUANTITY IN A GIVEN RATIO A quantity can be increased or decreased in a given ratio by multiplying it by a suitable fraction. If a price increase in the ratio 3:2, the…
Maths
RATIO AND PROPORTION PART II
PROPORTIONAL DIVISION Proportional division is about sharing something in a given ratio. The ratio tells you how to do the sharing. To divide something in a given ratio: 1. Find the total numbe…
Maths
RATIO AND PROPORTION
RATIO A ratio compares things. The things may be numbers, masses, amounts of money,etc. For example:if we have five boys and seven girls in a class, then we say that the ratio of the boys to gir…
Maths
PROBABILITY PART II
On our previous lesson, we learnt about single events in probability. But today, we will be moving to the next stage which is multiple events. Multiple Events Independent and Dependent Events …
Maths
PROBABILITY PART I
INTRODUCTION Probability is the chance of an event occurring. Probability is equivalent to the number of ways of achieving success The total number of possible outcomes For example, the pro…
Maths
INTERIOR ANGLES OF A QUADRILATERAL
The sum of the interior angles of any quadrilateral is 360°. Consider the two examples below. You could draw many quadrilaterals such as these and carefully measure the four angles. You would fin…
Maths
QUADRILATERALS
A quadrilateral is a polygon with four sides. Examples of quadrilaterals are kite, parallelogram, rhombus, rectangle, square etc. Check out the following definitions and the quadrilateral family t…
Maths
PLANE GEOMETRY(POLYGONS)
A polygon is a closed figure where the sides are all line segments. Each side must intersect exactly two others sides but only at their endpoints. The sides must be noncollinear and have a common …
Social Plugin