See our pages on circles and curved shapes for more. Any other polygon is an irregular polygon, which by definition has unequal length sides and unequal angles between sides.Ĭircles and shapes that include curves are not polygons - a polygon, by definition, is made up of straight lines. There are two main types of polygon - regular and irregular.Ī regular polygon has equal length sides with equal angles between each side. There are names for many different types of polygons, and usually the number of sides is more important than the name of the shape. The ‘poly-‘ prefix simply means ‘multiple’, so a polygon is a shape with multiple sides, in the same way that ‘polygamy’ means multiple spouses. An Olympic heptathlon has seven events – a heptagon has seven sides.The modern pentathlon has five events – a pentagon has five sides. Coach Sale / All Sale All Sale UP TO 50 OFF select styles.A decade is ten years – a decagon has ten sides.An octopus has eight legs – an octagon has eight sides. These can sometimes be useful in helping you remember how many sides a polygon has. The Greek numerical prefix occurs in many names of everyday objects and concepts. The names of polygons are derived from the prefixes of ancient Greek numbers. 15 OFF YOUR FIRST PURCHASE OF 200+ SIGN UP. One with one obtuse angle and two acute angles is called obtuse (obtuse-angled), and one with a right angle is known as right-angled.Įach of these will also be either equilateral, isosceles or scalene. Shop the latest selection of designer items on sale at. The internal angles of a triangle always add up to 180°.Ī triangle with only acute internal angles is called an acute (or acute-angled) triangle. Triangles can also be described in terms of their internal angles (see our page on Angles for more about naming angles). Total shipping To be determined Total Continue shopping Proceed to checkout Popular Specials Quick view CAD126.10 CAD688.00 In Stock Coach Tote Bag CAD126.10 CAD688.
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