Finding the perimeter or area of a rectangle in the coordinate plane – In this lesson, we are given rectangles in the coordinate plane. We are required to find the perimeters and the areas of these rectangles. We read the coordinat…Read More

Area involving rectangles and triangles – In this lesson we solve problems involving rectangles and triangles. We are given rectangles. In these rectangles, triangles are drawn or cut off and the remain…Read More

Area of a parallelogram – A parallelogram has two pairs of parallel equal opposite sides. It has a base and a height which is the perpendicular distance between the base and its opposite…Read More

Area of a trapezoid – The trapezoid has one pair of parallel opposite sides called the bases b1 and b2. The height h of the trapezoid is perpendicular distance between these bases.…Read More

Finding the area of a right triangle or its corresponding rectangle – Area of a right triangle…Read More

Area of a triangle – Consider any triangle as follows…Read More

Finding the area of a trapezoid on a grid by using triangles and recta – In this lesson we find areas of trapezoids on grids by using triangles and rectangles. The trapezoids are decomposed into triangles and rectangles and their are…Read More

Area between two rectangles – In this lesson, we solve problems involving areas between two rectangles.…Read More

Finding the area of a right triangle on a grid – In this lesson, we find the area of a right triangle on a grid. We draw the given right triangle on the grid and then measure its base and height on the grid. T…Read More

Area of a piecewise rectangular figure – In this lesson we find the area of given piecewise rectangular figures. The figures are broken down into two or more rectangles and their areas are found. The s…Read More