In this area of polygons activity, 9th graders solve two area of rectangles, one area of parallelogram, and ten area of triangles problems.  The formulas for finding the area of these figures are provided.

In this area of triangles worksheet, students solve 18 area of triangles problems.  Students find the area of various types of triangles given a graph of the triangle.

In this find the area worksheet, 10th graders solve and complete 18 different types of problems. First, they find the area of a figure with consecutive sides. Then, students find the area and perimeter of a square shown. They also find...

In this right triangles worksheet, 10th graders solve and complete 5 various types of problems. First, they solve each of the triangles shown and find the area of each triangle. Then, students find the perimeter and area of the regular...

In this area activity, students find the area of rectangles, triangles and circles. This eight-page activity contains approximately 36 problems. Examples and explanations are provided. Answers are included at the end of the activity.

Young scholars explore what the Bermuda triangle is and the theories as to why it is so mysterious.  In this mystery lesson students read and discuss the history and the mystery behind the Bermuda Triangle. 

In this perimeter and area worksheet, 9th graders solve 17 various types of problems, mostly word problems related to determining the area or perimeter of a geometric shape. They also determine the area and perimeter of shaded portions...

For this areas of triangles instructional activity, learners observe given polygons. They determine the area of triangles, rectangles and compound figures. This one-page instructional activity contains 5 multi-step problems. This...

In this area of quadrilaterals instructional activity, 10th graders solve and complete 5 various types of problems. First, they solve each of the triangles shown and find the area of each triangle. Then, students prove that the sum of...

Students estimate the area of states using the formulas for the areas of rectangles, squares, and triangles. In this geometric shapes lesson, students divide irregular shaped states into shapes. They use the formulas for areas of...

In this geometry worksheet, 10th graders solve problems involving area of a triangle.  The worksheet contains a combination of problems drawn on a grid and those with the dimensions labeled.  The two page worksheet contains...

In this triangles worksheet, learners respond to 4 short answer problems. Students describe side relationships of different types of triangles. Learners find the area of a segment formed by a sector.

In this polygon area worksheet, students answer 8 questions involving the area of several polygons. Students are given various details of the polygon and must find lengths of various polygons.

In this formulas worksheet, students write the area, perimeter, and volume formulas of 17 2D and 3D polygons.  Students list properties of various types of triangles and the metric conversions for metric units.

In this triangles instructional activity, 10th graders solve and complete 23 various types of problems. First, they match the triangle description with the most specific name and write the letter on the line provided. Then, students...

For this centroid of triangles worksheet, students use given information to determine the centroid of a triangle. They identify the point through which all medians of the triangle pass. This five-page worksheet contains approximately 20...

Students calculate the area of different polygons. In this geometry lesson, students find the area for trapezoids, rhombuses and kites.

In this areas by dissection worksheet, learners find the area of given composite figures. This three-page worksheet contains examples, explanations, and 16 problems. Answers are provided on page three.

For this volume and surface area worksheet, students use given formulas to determine the volume and area of polyhedrea. This four-page worksheet contains examples, explanations and 32 problems. Answers are provided on the fourth page.

Students identify the special segments of triangles, the median, angle bisector, altitude, and perpendicular bisectors.

Learners investigate the Napoleon triangle theory. In this polygon lesson plan, students  differentiate between the boundary points, interior and lattice point of a polygon. They apply concepts of equilateral triangles to solve...

Students map magnetic fields of a magnet using a compass and predict where fields cancel each other to create 'Bermuda Triangles'. For this magnetism lesson, students use a compass to map the magnetic field of a magnet. They explain how...

Fourth graders use pattern blocks to explore areas of polygons. They explain that the answers to the area of the same polygon vary according to the units of measurement used. They visualize how different units of measurement can be used...

In this geometry worksheet, learners find the area and perimeter of 6 different compound shapes containing squares, rectangles, triangles, and half circles.