Visualising solid shapes

Front

What is a sphere?

Back

A sphere is a three-dimensional shape that is perfectly round, with all points on its surface equidistant from its center.

Front

What is a circle?

Back

A circle is a two-dimensional shape where all points are equidistant from a central point.

Front

What is the difference between 2D and 3D figures?

Back

2D figures have only length and breadth (like circles), while 3D figures have length, breadth, and height (like spheres and cubes).

Front

What are the three measurements of a 3D object?

Back

Length, breadth, and height.

Front

What is a pyramid?

Back

A pyramid is a three-dimensional shape with a polygonal base and triangular faces that meet at a common point called the apex.

Front

What is a square pyramid?

Back

A square pyramid is a pyramid with a square base and four triangular faces.

Front

How many edges does a cube have?

Back

A cube has 12 edges.

Front

How many edges does a rectangular prism have?

Back

A rectangular prism has 12 edges.

Front

What is the formula for the volume of a sphere?

Back

The volume of a sphere is given by the formula V = (4/3)πr³, where r is the radius.

Front

What is the formula for the surface area of a sphere?

Back

The surface area of a sphere is given by the formula A = 4πr², where r is the radius.