Area of Triangles Differentiated Worksheet with Answers | KS3 & GCSE Foundation
Build pupils’ confidence with the area of triangles using this differentiated worksheet, featuring 25 questions and a separate answer sheet.
The activities are organised into three levels:
• Developing - explore shaded areas and use the relationship between rectangles and triangles to derive the area formula.
• Secured -apply the formula to triangles in different orientations, selecting the appropriate base and perpendicular height.
• Mastered - tackle compound shapes, shaded-area problems and possible dimensions for a triangle with a given area.
Suitable for KS3 mathematics and consolidation or revision at GCSE Foundation level.
Use for independent practice, homework, targeted intervention or checking understanding after teaching the topic.
Included:
• One landscape worksheet with three differentiated sections
• A separate answer sheet
• An editable Microsoft Word document
Topics covered: area of triangles, perpendicular height, compound area, shaded regions and mathematical reasoning.




