攻克新GRE数学，从重要考点的各个击破开始！今天小编为大家整理的是Geometric Figures的相关内容。

**Geometric Figures**

If a point is selected at random inside a geometric figure, then the probability that the selected point lies inside a particular region is the ratio of their areas:

area of the particular region inside the figure/area of the whole figure.

Example:

The probability that a randomly selected point within the square lies inside the circle=area of circle/area of square=∏r2/(4r2)= ∏/4.

Remember:

If the particular region is not completely inside the figure, then use only the area that is inside the figure.