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.
Read More →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 […]
Read More →If the diagonals of a Quadrilateral, bisect each other then that Quadrilateral is a Parallelogram Given: ABCD is a quadrilateral with AC and BD are diagonals and diagonals intersect each other at O. i.e. OA = OC and OB = OD To Prove: ABCD is a parallelogram. Proof: In △AOD and △COB […]
Read More →Geometry Introduction Geometry comes from the Greek meaning “Earth measurement”. Geometry is a branch of mathematics, and concerned with visual study of shapes, sizes, properties and patterns. A mathematician who works in the field of geometry is called a Geometer. Geometry can be divided into: 1. Plane geometry 2. Solid geometry […]
Read More →Circumscribed and Inscribed Circle 1. Circumscribed circle In geometry, the Circumscribed circle or circumcircle of a polygon is a circle that passes inside a circle in such a way that all its vertices lie on the circle, or just touch the circle. Centre of this circle is called circumcenter and its radius is called […]
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