### Prism

The Prism is a three-dimensional solid figure formed by two parallel polygons and congruent
called bases. The number of sides of one of the bases gives the name of a prism, such as triangular, quadrangular, pentagonal and octagonal for 3, 4, 5 and 8
sides,respectively.

Isaac Newton, English physicist and mathematician, long time ago, used a triangular glass prism to show the decomposition of light, concluding, that, the white
light is a mixture of seven colors: red, orange, yellow, green, blue, indigo and violet.

Prism elements:

• Face: parallelogram with four equal sides;

• Base: a polygonal figure;

• Total surface: sum of the all face areas;

• Lateral surface sum of the lateral face areas;

.
• Height: distance between the plane of a base and the othe. ;

• Face diagonal: the segments line, joining two opposite corners of the same face.

When the base of a prism is aligned directly above the two other, the prism is right. On the contrary is oblique.

If the base of a prism is a regular polygon, the prism is regular. On the contrary, the prism is irregular.

How to calculate the elements of a **Prism.**

### Related Topics

Right Triangle Isosceles Triangle Equilateral Triangle Scalene Triangle Square Rectangle Trapezium Right-Angled Trapezoid Isosceles Trapezoid Rhombus Regular polygon Polygon names Circle Pyramid Triangle pyramid Square pyramid Rectangular pyramid Cube Prism Rectangle Prism Cone Cylinder Sphere