Similar Polygons Two polygons are similar if they have same shape, but not the same size. Similar polygons are polygons, if their corresponding angles are congruent, and the measure of their corresponding sides are proportional. The ratio of length of their corresponding sides are all in a constant ratio, and their corresponding angles are equal. […]

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Polygons – Classification We classify polygons to the number of side orvertices based they have. A polygon can be classified by it’s number of a sides and measure of angles. First, we classify by it’s number of a sides.               Classified by measuring the sides The name of a polygon usually […]

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Concave Polygons: Definition – Examples & Properties   All polygons is either convex or concave. A polygon will be convex or concave, it depends on the measure of their angles. What is a Concave Polygon? A concave polygon have at least four sides, and concave polygon is just opposite of a convex polygon. If the measures […]

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   Type of Polygons Definition A polygon is a two-dimensional shape form with more than three straight lines. In a polygon each side must be intersect exactly two other sides, but only at their end points and have a common endpoint. The sides have must noncollinear. The name of a polygon usually depends on how […]

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Perimeter of shapes Definition:  The distance that surrounds a two dimensional shape is known as “Perimeter.”   Simply, we can say that ‘The Perimeter is the length of the outline of a shape.  In the below figure if we start measure from the point A and move along the line segments and reach again the point A.We have […]

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Vertex – Definition and Examples  Vertex – Latin word Vertex meaning, “highest point”. What is Vertex? Vertex is a point where two or more rays or line segments are meet. When two rays or line segments meet, simply it is a corner, they form an angle. Definition: A vertex is a point on a polygon, where […]

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2D – Shapes – Definition – Different Shapes  Definition: 2D shapes are flat and also known as plane shapes, ‘2D’ stands for 2-dimensional. These shapes can be drawn on paper and have length and width. We can measure length and width. Example: Rectangle, triangle, square, circle, oval, etc. are 2 dimensional objects.

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Symmetry Lines – Alphabets Words Alphabet letters A to Z with  symmetry lines. Letters A, B, C, D, E, K, M, T, U,  V, W and Y have one symmetry line. Letters H, I and X have two symmetry lines. Letters F, G, J, L, N, P, Q, R, S, and Z have no symmetry […]

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 Three Dimensional Shapes In this section, we will discuss about 3D three dimensional shapes. Definition: Example: Cuboid, cube, cone, cylinder, sphere, pyramid, rectangle pyramid, square pyramid, triangular prism, tetrahedron, hexagonal pyramid etc. are examples of three dimensional shapes. It has six rectangles and each rectangle is called the face. The opposite faces of a cuboid […]

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