NECO Mathematics · Plane Geometry
Triangles and Polygons: NECO Mathematics Past Questions and Answers
What the WAEC syllabus covers in Triangles and Polygons
Our summary: The angle and side rules for triangles, special quadrilaterals and other polygons.
- The sum of the angles of a triangle is 2 right angles
- The exterior angle of a triangle equals the sum of the two interior opposite angles
- Congruent triangles
- Properties of special triangles: isosceles, equilateral, right-angled, etc.
- Properties of special quadrilaterals: parallelogram, rhombus, square, rectangle, trapezium
- Properties of similar triangles
- The sum of the angles of a polygon
- Property of exterior angles of a polygon
- Parallelograms on the same base and between the same parallels are equal in area
Syllabus content © The West African Examinations Council (WASSCE (harmonised West African syllabus)). NECO questions are matched to the WAEC syllabus topic.
NECO Mathematics questions on Triangles and Polygons
- NECO 2008In proving the congruence of two triangles, which of the following is not important?
- NECO 2008which of the following properties is/are common to parallelograms and rectangles? I. all angles are right angles II. the diagonals are equals. III. the opposite…
- NECO 2004The diagonals of a rhombus are 16cm and 30cm long. What is the perimeter of the rhombus
- NECO 2004Two angles of a triangle are 45º each and its longest side is 12cm. Find the length of one of the other sides
- NECO 2004One of the interior angles of a regular polygon is 120°. Find the number of sides of the polygon
Years with Triangles and Polygons questions in DeeepSolve's question bank
From the past questions DeeepSolve holds, not a count of everything the exam body has set.
- 2008
- 2004