Curated OER
Symmetries of a Quadrilateral II
Learners investigate the symmetries of a convex quadrilateral in a collaborative activity. Rigid motion and complements are explored as learners analyze different cases of reflections across a line.
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Evergreen Tree
Learners use a ruler to make measurements, and to create triangles and a rectangle. They take the shapes they've made and assemble them into an evergreen tree image. This simple, yet effective, lesson would be ideal for young learners...
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The Shape Song
As a review of geometric shapes, such as circles, triangles, and squares, this resource would be a terrific addition to a classroom lesson. The visuals are inviting and the number of sides to each figure are also identified. In addition,...
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Geometry
What a fun activity for younger learners! Using this resource, they can discuss the attributes of squares, rectangles, triangles, circles, and ovals, and also engage in a motivating activity. For those learning about simple shapes, this...
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Match the Shapes
Which shape is the same? Young geometers match a triangle, circle, rectangle, and square to their identical counterparts, connecting them with a line from left to right. Then, they do the same thing with a set of four circular shapes,...
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2-Dimensional Shapes: Coloring Shapes
For beginners to color, number, and shape theory, this is a great way to solidify skills. They use a key at the top to determine which color (yellow, green, purple, or blue) to shade each shape (square, triangle, circle, and rectangle,...
Illustrative Mathematics
Alike or Different Game
How are a circle and triangle alike? How are they different? These are the types of questions children will answer while playing this fun geometry game. Including a variety of conventional and unconventional shapes, this activity allows...
Curated OER
All About Quadrilaterals
In this quadrilateral post test worksheet, 7th graders answer ten multiple choice questions by solving questions based on quadrilaterals and angles of quadrilaterals. This is an interactive worksheet.
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Travel Triangles
Students demonstrate and understanding of the three types of angles using triangles and quadrilaterals. In this angles lesson plan, students learn about acute, obtuse and right angles. They use cut-outs to find the areas of triangles and...
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Triangles and Rectangles
In this geometric shapes worksheet, students study five pictures of trees made out of triangles and rectangles. Students follow the directions to trace and color the shapes they find in the picture.
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Polygons, Parallelograms, Quadrilaterals- Oh My!!!
Students demonstrate their comprehension of shapes and their properties. They work in small groups. Students review the following terms: property, polygon, quadrilateral, and parallelogram. They read Shape Up! Fun With Triangles and...
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Creating a Cyclic Quadrilateral
Identify and make conjecture about properties of cyclic quadrilaterals. Students use the TI Navigator to create different shapes and draw conclusions.
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Quadrilaterals
In this solving quadrilateral word problems worksheet, students apply knowledge of congruent shapes to problem solve. Students solve six problems.
Inside Mathematics
Rhombuses
Just what does it take to show two rhombuses are similar? The assessment task asks pupils to develop an argument to show that given quadrilaterals are rhombuses. Class members also use their knowledge of similar triangles to show two...
Mathematics Vision Project
Congruence, Construction and Proof
Learn about constructing figures, proofs, and transformations. The seventh unit in a course of nine makes the connections between geometric constructions, congruence, and proofs. Scholars learn to construct special quadrilaterals,...
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An Introduction to Quadrilaterals
Students explore different types of quadrilaterals. Students define the terminology used with quadrilaterals. They create particular quadrilaterals based on specific characteristics of the quadrilaterals using an online tool.
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Quadrilaterals and Other Polygons
In this polygon instructional activity, 5th graders name 6 polygons, tell if each one is a regular polygon or not and tell if it is a special quadrilateral.
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All About Quadrilaterals
In this all about quadrilaterals activity, learners interactively answer 10 multiple choice questions about quadrilaterals, then click to check their answers.
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Intro To Quadrilaterals
Students engage in a lesson plan that is concerned with the concept of quadrilaterals and how they are used to create a rectangle for a door. They create a drawing of a quadrilateral while finding the sum of the angles. They practice...
Curated OER
Geometry: Shapes-Squares, Rectangles and Triangles
In this geometry learning exercise, students distinguish which of eight shapes are squares, rectangles and/or triangles. Students write the name of each shape on the lines provided.
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Classifying Quadrilaterals
Students cut out three different shapes and put them in the correct categories of parallelograms, trapezoids, and trapeziums. For this parallelogram lesson plan, students explain the sums of the angles of a triangle and a quadrilateral.
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Identifying Similar Triangles
In this identifying similar triangles worksheet, 10th graders solve 6 different types of problem that include identifying and comparing similar triangles. First, they identify the three ways that determine whether two triangles are...
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Identifying Triangles
Sixth graders identify and define a variety of triangles. In this identification of triangles lesson plan, 6th graders draw examples of each triangle on a whiteboard, then complete a worksheet.
Curated OER
Review Geometry - Week 8 (Triangles)
In this triangle worksheet, students use similar figures to find the length of one side of two similar triangles. They find the area of a triangle inscribed in a rectangle. This two-page worksheet contains eight problems.