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
THE RIGHT-ANGLED TRIANGLE
PYTHAGORAS THEOREM This is about right angled triangle. A triangle which has one side to be a right angle is said to be right angled triangle. Figure 3.25 Pythogaras theorem states that for…
Maths
SIMULTANEOUS EQUATIONS(ELIMINATION METHOD)
INTRODUCTION Simultaneous equations are equations which are true at the same time. I. E. simultaneously. To solve a pair of equation in two variables such as x-y=1 and x+y=5 simultaneously,…
Maths
NUMBER LINE REPRESENTATION
Representation of solution of linear inequality in one variable on a number line To represent the solution of a linear inequality in one variable on a number line, we use the following conventi…
Maths
LINEAR INEQUALITIES
A statement involving the symbols ‘>’, ‘<’, ‘ ≥’, ‘≤’ is called an inequality . For example 5 > 3, x ≤ 4, x + y ≥ 9. (i) Inequalities which do not involve variables are called numerica…
Maths
VAT AND NHIL
NATIONAL HEALTH INSURANCE LEVY(NHIL) is a tax charged on some goods and services for the provision of health care services in Ghana. The rate NHIL in 2½% of the basic cost of the goods and service…
Maths
VALUE ADDED TAX(VAT
VAT is a tax charged on goods and services. The rate of VAT is usually given in percentages and it is added to the basic cost. If the VAT rate is x%, then the VAT is given by: VAT=x/100 ✖️ Basic …
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