A selection of our very best maths resources entirely free, updated each month.
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Have a look at some of our popular resources in this category.
Calculating angles in a triangle: note that these are not drawn to scale so the angle cannot be measured, it has to be calculated from the knowledge that there are 180 degrees. in a triangle.
Calculating angles on a straight line - a favourite with the SAT question writers.
Typical SAT questions on acute and obtuse angles,
Harder questions on angle.
More angle questions.
Understanding acute and obtuse angles.
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