Using the area, the height is found by dividing twice the area by the sum of the two bases of the trapezoid. Without the area, the height is found by using the Pythagorean Theorem; right triangles can be formed from the ... More » Math Geometry Shapes

Second grade mathematics covers mathematical topics such as fractions, addition and subtraction of two-digit numbers, and collection and presentation of data. Students are also introduced to numbers up to 1,000 and their... More » Education K-12 K-12 Curriculum

A quadrangle with one right angle has no special name. It is called a quadrangle or a quadrilateral. Any four-sided shape is a quadrilateral, according to Math Is Fun. More » Math Geometry
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The formula is the length of the prism times the area of the trapezoid, which is one-half times (a+b) times the height; the area is also called the cross-sectional area. "A" and "B" are the two bases of the trapezoid. Th... More » Math Geometry Shapes

The area of a trapezoid is found by multiplying the average length of the two parallel bases by the height, or 1/2 (b1 + b2) x h. The height is the length of a line connecting one base to the other at a 90-degree angle. More » Math Geometry Shapes

The surface area of a cylinder is equal to the sum of the surface area of the circles on either end and the surface area of the side. The surface area of the side is equal to the product of the circumference of the circl... More » Math Geometry Shapes

Lateral area is defined as the sum of the areas of all the faces of an object, except for the base of the object. This math term is often abbreviated as L.A. More » Math Geometry Shapes