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…
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