Answer: The correct answer is A. Plane geometry.
Explanation
Plane geometry, always known as Euclidean geometry, is a branch of geometry that is related to the study of plane shapes with two dimensions (tall and long) and its properties and others shapes as points, lines, surfaces and angles. Those shapes serve to calculate areas (the inner surface of a geometric shape), and perimeters (the sum of the lengths of their sides) in different shapes as circle, square, rectangle triangle, among others. So, the correct answer is A. Plane geometry.
