Explore the triangle area formula, its derivation, and practical examples to master this essential geometric concept effortlessly.

The perimeter and area of triangles, quadrilaterals (rectangle, parallelogram, rhombus, kite and square), circles, arcs, sectors and composite shapes can all be calculated using relevant formulae.

A demonstration of how to calculate the perimeter and area of simple and compound shapes with the help of the crow and Detective Stinker.

Learn how to calculate the areas of rectangle, triangle, and circle in Excel for a single cell or range of cells usin this formula.

Extra: The puzzle presented in this activity is called a “perimeter magic triangle of order three.” To extend it to a higher-order perimeter magic triangle start by drawing a new triangle.

Any triangle has between one and three lines that bisect both the area and the perimeter. We determine the conditions for each possible number. The College Mathematics Journal emphasizes the first two ...