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This is a useful area of mathematics that will aid your understanding of number. Index notation – WJEC Indices are a ... Read through the mathematics revision guide and learn how to calculate ...

Polygons can be regular or irregular. If the angles are all equal, and all the sides are equal in length, it is a regular polygon. To find the sum of interior angles in a polygon, divide the ...

Exam boards including WJEC have issued lists showing the minimum needed for each grade and the maximum possible score that could be attained. WJEC runs exams under the WJEC and Eduqas brands.