A symmetric lens is the one in which arcs have equal radii, whereas asymmetric les contain arcs with unequal radii. Lens – It is a biconvex shape which is composed of two circular arcs meeting with each other through their end points. An arc is known as major arc if it measures greater than 180 degrees, and if not then it is known as a minor arch. It can be considered as a part of the circumference of a circle. It covers regular or irregular egg shaped curves too.Īrch – it is defined as a curved path from one point of a circle to another. This generic term can be used for ellipses as well as. Oval – It is used to denote any kind of closed egg shape or oblong curve with no points. In this way, circle can be considered as a type of ellipse with major and minor axis of same length and both foci falling in the center. It appears like a squashed circle reduced to an oval type shape. The sum of distances to the focus points from any point on the ellipse remains same. An ellipse is characterized by two points known by the same name as focus. Diameter is the longest distance calculated from one end of the circle to the other and radius measures the distance from center of circle to any point present on its circumference.Įllipse – An ellipse is the cross section shape which is derived when a cone or a cylinder is cut at an angle. Circumference denotes the total distance around the circle. It is basically a locus of all points which measure the same from a central point. Shapes with Curves – Some common examples are -Ĭircle – A circle is represented by three attributes – circumference, diameter and radius. Similarly, nanogon contains 9 sides and decagon contains 10 sides. Pentagon is a polygon with 5 sides, hexagon is a polygon with 6 sides, heptagon is a polygon with 7 sides, Octagon is a polygon with 8 sides. Trapezium possesses one pair of parallel sides of unequal lengths. Rectangles, rhombus and square, all fall in the category of parallelogram. A parallelogram is the quadrilateral with 2 pairs of parallel sides. Both pairs of opposite sides are also parallel in the case of rhombus. A rhombus type of quadrilateral is characterized by 4 equal sides. Rectangle is another quadrilateral with 2 lines of symmetry. Square is a quadrilateral with 4 equal sides and four right angles. This is a group consisting of a variety of members. Quadrilaterals – It is a close figure possessing 4 sides. Acute triangle is the triangle whose all angles are acute. Obtuse triangle is the triangle whose one of the angles is greater than 90 degrees, whereas the other two angles measure less than 90 degree. It also includes a right angle triangle whose one of the angles is a right angle or of 90 degrees. Scalene triangle is the triangle which has no equal sides and no equal angles. Isosceles is another type of triangle which has 2 equal sides and 2 equal angles. There are many different types of triangles like equilateral triangle with all sides equal in length and 3 equal angles of 60 degrees. Triangles – These are shapes characterized by three sides. A polygon with all sides and angles same is known as a regular polygon, and if not then it is termed as an irregular polygon. Here the one dimension term refers to length.Ģ Dimensional shapes (shapes with length and breadth) – A plane 2 D shape with straight lines and no curves is known as a polygon. Line – The category of 1 dimensional shapes includes shapes with only lengths. These geometrical shapes can be classified into following categories – These geometric shapes provide the geometric location which excludes the factors like orientation, scale, location and reflection. Shapes in context to geometrical shapes lie in the concepts of plane and solid geometry. Shape defines the external boundary or surface of an object. Commonly, shapes are divided into three categories – 1, 2 and 3 dimensional shapes. Key Difference: Geometrical shapes cover all basic shapes like lines, polygons and simple curves.
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