Triangles - 2-dimensional shapes - CCEA - GCSE Maths Revision
2-dimensional shapes are flat. The perimeter of a 2D shape is the total distance around the outside of the shape.
The area of a triangle - Trigonometry - Higher - CCEA - GCSE Maths Revision - CCEA - BBC Bitesize
Similar Shapes - GCSE Maths - Steps, Examples & Worksheet
3-dimensional shapes - 3-dimensional shapes - CCEA - GCSE Maths Revision - CCEA - BBC Bitesize
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GCSE Maths : Geometry Lite on the App Store
Similar triangles - Higher - Congruent and similar shapes - CCEA - GCSE Maths Revision - CCEA - BBC Bitesize
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CCEA M1 Revision – Corbettmaths
2D Shapes - GCSE Maths - Steps, Examples & Worksheet