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### We found 1,557 resources with the concept polygons

Lesson Planet

#### Polygons

What shapes classify as a polygon? The resource provides the definition of a polygon and provides examples of polygons and shapes that are not polygons. The presentation gives an explanation of why each shape falls into the particular...

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#### Interior Angles of a Polygon

The sum of angles of a polygon—what do triangles have to do with it? Given the formula for the sum of the measures of the interior angles of a convex polygon, pupils explain why it finds the sum. Learners may use a diagram to help with...

Lesson Planet

#### Camping Calculations

At what angle should you pitch your tent? Given a diagram of a tent, pupils find the measure of a missing angle of the tent frame. Individuals use the properties of angles of polygons to determine the measure of two congruent angles in a...

Lesson Planet

#### Polygons

Identify shapes based on their attributes. Second graders are tasked to color triangles, quadrilaterals, pentagons, and hexagons specific colors. The one thing these shapes have in common? They are all polygons.

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#### Exploring Quadrilaterals

Sort this resource into the Use pile. Scholars investigate attributes of quadrilaterals and then use the results to sort and classify the shapes labeling each figure with their properties to justify the classifications.

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#### Round Triangles

Watch as triangles try to keep up with circles! A video lesson explains the concepts of round and rounded in relation to different shapes. The instructor shows how a round triangle can turn easily in a square hole.

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#### Between the Lines

Explore linear and square dimensions by comparing areas of similar figures. A creative set of five activities designed for elementary through high school classes asks young scholars to compare areas of specific polygons. The first two...

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#### Piece it Together

Score some problems all related to soccer balls. The first few problems focus on pattern blocks to see relationships between figures. More advanced problems focus on actual soccer balls, the patterns on the balls, and their volumes and...

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#### Lyle's Triangles

Try five problems on triangles. Levels A and B focus on shapes that can be created from right triangles. Level C touches upon the relationship between the area of a six-pointed star and the area of each triangle of which it is composed....

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#### Poly-Gone

Investigate polygons from rectangles to triangles to octagons. Each level of the five-problem series targets a different grade level. Beginning with the level A problem, learners examine the relationship between area and perimeter by...

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#### What's Your Angle?

Math can be a work of art! Reach your artistic pupils as they explore angle measures. A creative set of five problems of varying levels has young learners study interior and exterior angle measures of polygons. The introductory levels...

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#### The Shape of Things

Investigate the attributes of polygons. A thorough set of lessons presents problem scenarios for elementary through high school classes. The first lessons focus on basic characteristics of polygons, including the line of symmetry. As the...

Lesson Planet

#### Cutting a Cube

Teach the ins and outs of the cube! A series of five K–12 level activities explore the make-up of the cube. The beginning lessons focus on the vocabulary related to the cube. Later lessons explore the possible nets that describe a cube....

Lesson Planet

#### Cut It Out

Explore the mathematics of the paper snowflake! During the five lessons progressing in complexity from K through 12, pupils use spatial geometry to make predictions. Scholars consider a folded piece of paper with shapes cut out. They...

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#### Angles in Polygons

Polygons — it's all about the angles. Groups work with dynamic geometry software to find the sum of the measures of the angles of various polygons. After finding the information for several polygons, the groups generate a formula that...

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#### Angles in Polygons

Show your class that finding angle measures is a regular calculation with a resource that provides 12 problems dealing with the measures of angles in regular polygons. Pupils use formulas for the sum of measures of angles in a polygon to...

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#### Evaluating Statements About Length and Area

Class members complete an assessment task by identifying whether statements about triangles and quadrilaterals are always true, sometimes true, or never true. They then participate in a sorting activity with the same objective.

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#### Applying Angle Theorems

Polygon ... an empty bird cage? After finding the angles of a polygon, young mathematicians use the provided methods to solve the problem in multiple ways.

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#### Common Geometric Figures

Geometry could be called the study of figures. An overview of the figures found in a typical geometry course contains a study of different triangles, quadrilaterals, and regular polygons.

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#### Interior Angles, Exterior Angles, and Diagonals of Polygons

How does the number of sides of a polygon affect the angle measures? Learners recognize a pattern in finding the total measure of interior and exterior angles and the number of diagonals. They use the patterns to calculate the number of...

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#### Polygon Angle Sum

Using patterns to build a formula is an important mathematical skill. Pupils discover a formula to find the sum of interior angles in a polygon by analyzing a pattern. The additional videos show how to use the formula to find various...

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#### Candle Box

Individuals draw a net for a hexagonal pyramid — with some stipulations. The net must contain the printed images so they appear correctly on the box, along with tabs to glue the box together.

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#### Middle School Mathematics Test 4

Raise expectations in your classroom and assess learners through the provided performance tasks. Class members must apply concepts learned throughout the year, providing a good measurement of how well they understand the material. The...

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#### Study Jams! Solid Figures

Figure out the correct name for different three-dimensional shapes by watching the presentation on solid figures. Go through the main figures and read about the characteristics of each. Finish the topic with a multiple choice online...