 Hi and welcome to the session. Today we will learn about 3 dimensional shapes. In our day to day life we see many 3 dimensional shapes around us. For example, cubes, cuboids such as a box, spheres like a football, cylinders, cones such as ice cream cone, presents, pyramids. Now let us see what are the faces, edges and vertices of 3 dimensional shapes. So let us consider a cube. Now each side of a cube is a flat surface called a face. So here let us count how many faces a cube has. Here this is the first face, the bottom one is the second face. Now there will be 2 faces on both the sides, this one and this one. So we have 2 plus 2 that is 4. Now fifth face is the face at the back and the sixth face is the face at the front. So that means there are 6 faces. Now let us see what are the edges. 2 faces meet at a line segment called an edge. So let us count how many edges are there in a cube. Here we have first edge, second, third, fourth, then fifth, sixth, seventh, eighth, ninth, tenth, eleventh. So that means there are 12 edges in a cube. Next 3 edges meet at a point called a vertex. Now vertices is the plural of vertex. So let us see how many vertices are there in a cube. 1, 2, 3, 4, 7 and 8. So that means there are 8 vertices in a cube. This is how we can find the faces, edges and vertices of a 3 dimensional shape. Similarly you can find the faces, edges and vertices of other 3 dimensional shapes also. So with this we finished the session. Hope you must have understood all the concepts. Goodbye, take care and keep smiling.