Family Activity: Triangles and Quadrilaterals

6th - 8th

In this triangles and quadrilaterals worksheet, students solve 7 short answer problems. Students find objects around the house that are constructed from triangles, parallelograms, trapezoids, squares, rectangles. Students sketch the object on their paper.

Resource Details

McGrawHill Glencoe

Areas of Triangles, Parallelograms, Trapezoids

Young scholars use index cards to record and math the formulas for area of triangles, parallelograms, and trapezoids. In this area lesson plan, students also complete a worksheet provided.

Finding the Area and Perimeter of Polygons

Seventh graders practice finding the area and perimeter of polygons. In this polygon area activity, 7th graders brainstorm shapes and take a walk to locate shapes. Students record properties of shapes and use various shapes to make a polygon. Students practice finding formulas for the area of a square, rectangle, triangle, parallelogram, and trapezoid. Students complete to problems by maximizing area with a given perimeter.

Finding the Area of Shapes

In this area of shapes unit, upper graders participate in hands-on problem solving activities to find the formulas for the area of a parallelogram, a triangle, and a trapezoid. They manipulate the geoboard to explore relationships among various shapes and their areas.


In this area worksheet, students solve and complete 20 different problems that include the measurement of various figures. First, they determine the area of each of the triangles, parallelograms and trapezoids. Then, students determine the area of each of the shaded regions in the figures shown.

Marshmellow Geometry

Learners explore a variety of geometric shapes, name them, and list their characteristics. The shapes are transposed into structures and checked for accuracy.

Developing Formulas for Triangles and Quadrilaterals 

In this geometry worksheet, 10th graders determine the area of triangles, parallelograms, trapezoids, kites, and rhombuses. The one page worksheet contains eleven problems. Answers are included.

Area and Perimeter of Figures

In this area and perimeter worksheet, 10th graders solve 10 different problems that include various figures shown. First, they determine the area of triangles, parallelograms, and trapezoids in each box. Then, students determine the perimeter of each triangle, parallelogram and trapezoid illustrated.

Does the Area of the Quadrilateral Change?

Seventh graders complete activities to further their understanding of area formulas. For this area lesson, 7th graders watch as the teacher uses Polystrips to model parallelograms. Students find the area of a rectangle and answer questions about the equation. Students work as a group to solve a parallelogram problem.

Does the Area of the Quadrilateral Change?

Students study area and quadrilaterals. In this multiplication and area lesson plan, students use Polystrip models to change rectangles to form different parallelograms. Students find the area of the models use a Geometer Sketchpad to find the relationship between the family parallelograms.

Hula Hoop Sorting

First graders use two large hula hoops to form a Venn Diagram. Then, using various colored paper shapes, they recognize, and identify circles, squares, triangles, rectangles, hexagons, trapezoids, and parallelograms.

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