Measurements

Triangles come in different shapes and sizes, such as right triangles, scalene triangles, and isosceles triangles. Finding the area of these triangles

A right triangle contains one 90-degree angle and is formed when two sides meet perpendicularly. Finding its area uses a simple formula derived from t

Triangles appear throughout everyday life—in architecture, art, engineering, and design. Knowing how to find a missing measurement of a triangle when

A parallelogram is a quadrilateral with two pairs of parallel sides. Its area can be calculated using a formula similar to that of a rectangle, but wi

When the area of a parallelogram and one dimension are known, the other dimension can be found by rearranging the area formula. This skill is used in

A kite and a rhombus are special quadrilaterals whose area can be found by splitting them into two triangles. Understanding this method prepares stude

A trapezoid is a quadrilateral with exactly one pair of parallel sides, called the bases. Finding its area uses a formula that accounts for the two di

Many polygons are irregular and do not have a single simple formula for their area. By decomposing an irregular polygon into familiar shapes such as t

Volume measures the amount of three-dimensional space inside an object. Filling a rectangular prism with unit cubes and counting them is a concrete wa

The volume of a rectangular prism can be calculated efficiently using a formula rather than physically counting unit cubes. The formula relates the th

Three-dimensional shapes can be difficult to visualize. Nets make this easier by showing all the faces of a solid laid flat. Studying nets helps under

Surface area measures the total area covering the outside of a three-dimensional object. Using nets is a helpful way to find the surface area of prism

Surface area is the total area covering the outside of a three-dimensional object. One effective way to understand surface area is by using nets, whic

A coordinate plane is a grid formed by two perpendicular number lines, the x-axis and the y-axis, that intersect at the origin. Any point on the plane

Mixed numbers and improper fractions both represent the same values in different forms. Converting mixed numbers to improper fractions is an important

When two points are plotted on a coordinate plane, the distance between them can be calculated using their coordinates. Finding this length is an impo