Common formulas in the study of geometry include calculating the perimeter and area of shapes. For example, the perimeter or outside of a rectangle is the length plus the width of the rectangle times two. More »

A triangle is a three-sided polygon where the sum of its interior angles equals 180 degrees. Some common formulas for triangles include perimeter, the total sum of its individual side lengths; area, one-half of the produ... More »

Some basic math formulas include finding the average, geometry formulas (e.g., the perimeter of a square, area of a triangle, volume of a cylinder), the Pythagorean Theorem and Trigonometry formulas (e.g. Sine, Cosine, T... More »

Some basic math formulas include finding the average, geometry formulas (e.g., the perimeter of a square, area of a triangle, volume of a cylinder), the Pythagorean Theorem and Trigonometry formulas (e.g. Sine, Cosine, T... More »

Some fourth-grade math learning goals include mastering the operations of addition, subtraction, multiplication and division using whole numbers and fractions; understanding the concepts of area and perimeter; solving pr... More »

Engineers use geometry to study and analyze shapes and the relationships that transpire among them. Geometry is used in most fields of engineering, although it sees the most use in the area of civil engineering. Civil en... More »

Plane geometry is the sub-category of geometry that deals with flat surfaces and the coordinates, lines and shapes on them. To draw a plane, use grid or graphing paper and a straight edge or measuring tool. More »