Regular and irregular polygons

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a worksheet for identifying regular and irregular polygons with an orange border

Year 4 and 5 pupils classify shapes as regular or irregular polygons, comparing lengths and angles to determine regularity, and drawing polygons on isometric grids, enriching their geometry skills through comparison and creative drawing.

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four different shapes are shown in the diagram below them, and each has an individual's name

In math, every shape has a name that distinguishes it from other shapes. Instead of just triangles, there several types of triangles. For example, an equilateral triangle is distinct from a scalene triangle. There are names for types of shapes as well. Any shape with three or more flat sides and angels is called polygon. Polygons are flat shapes, they only have width and length. The word polygon comes from the root words of poly, meaning many, and gon, which means sides. The distinguishing…

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