Two-dimensional (2D) shapes are completely ... Irregular polygons are shapes that have sides and angles of different sizes. You can always identify the polygon by how many sides it has.

Save guides, add subjects and pick up where you left off with your BBC account. Two-dimensional (2D) shapes are completely flat. They cannot be picked up. A polygon is a 2D shape with straight ...

"2D copper boride is likely to be just one of many 2D metal borides that can be experimentally realized. We look forward to exploring this new family of 2D materials that have broad potential use ...

Birch (Betula paprifera) leaves are doubly toothed around the margins and symmetrical at the base, often forming a heart shape. In the fall, they turn a variety of brilliant colors, from golden ...

Curriculum-linked learning resources for primary and secondary school teachers and students. Videos, games and interactives covering English, maths, history, science and more!

This tool allows you to learn about various geometric solids and their properties. You can manipulate and color each shape to explore the number of faces, edges, and vertices, and you can also use ...