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How to determine if a polygon is concave, convex, regular or irregular

👉 Learn about polygons and how to classify them. A polygon is a plane shape bounded by a finite chain of straight lines. A ...
BBC

Sort 2D and 3D shapes

Two-dimensional (2D) shapes are completely flat. They cannot be picked up. A polygon is a 2D shape with straight sides that meet at vertices. Polygons have names that show the number of sides they ...
BBC

2d shapes

Find out about regular 2D shapes and irregular polygons. Types of triangle Find out about scalene, equilateral, isosceles and right-angled triangles. Parts of a circle Discover the features of a ...
YouTube on MSN

What is the difference between convex and concave

👉 Learn about polygons and how to classify them. A polygon is a plane shape bounded by a finite chain of straight lines. A polygon can be concave or convex and it can also be regular or irregular. A ...