### Triangles

See the steps to compute general properties of a triangle.

#### Determine the perimeter of a triangle step by step:

#### Compute the area of a triangle:

#### Compute an isosceles triangle's area or perimeter:

#### Compute the area of an equilateral triangle:

### Polygons

#### Explore various properties of regular polygons:

#### Find step-by-step solutions for determining particular properties of a regular polygon:

### Prisms

#### See the steps to compute a particular dimension of a given prism:

#### Explore the relationship between a prism's surface area and edge length:

#### Compute a prism's volume based on its side lengths:

#### Calculate areas of prisms based on their volume:

### Cones

#### Show how to find the height of cones:

#### Calculate a cone's slant height:

#### Compute the lateral surface area for cones:

#### Explore step-by-step solutions for determining the volume of cones:

### Line Equations

#### Determine the equation of a line: