# Two dimensions

In order that we learn about 3 dimensional volumes as a subheading we must point out an important fact about 2 dimensional surfaces.

Area of a triangle = `1/2` square area

Area of a triangle = `1/2\times\ base\ timesheight`

In order that we learn about 3 dimensional volumes as a subheading we must point out an important fact about 2 dimensional surfaces.

Area of a triangle = `1/2` square area

Area of a triangle = `1/2\times\ base\ timesheight`