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Help your students prepare for their Maths GCSE with this free complementary and supplementary angles worksheet of 30+ questions and answers
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Complementary angles are pairs of angles which sum to 90ยฐ (a right angle). Supplementary angles are pairs of angles which sum to 180ยฐย (a straight angle). Examples of this include the angles on a straight line and co-interior angles.ย
Complementary and supplementary angle facts can be used to find missing angles. For example if we have a linear pair of angles, two angles on a straight line, we can find the size of one angle given the size of the other. To do this we subtract the given angle from 180ยฐ.ย
Angle problems often involve knowledge of various types of angles as well as various angle relationships to find an unknown angle.
Looking forward, students can then progress to additionalย angles rules worksheetsย and otherย geometry worksheets, for example anย angles in polygons worksheetย orย volume and surface area of spheres worksheet.
For more teaching and learning support on Geometry our GCSE maths lessons provide step by step support for all GCSE maths concepts.
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