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Worksheet
Curated OER

Pythagorean Theorem

For Students 10th
In this Pythagorean Theorem worksheet, 10th graders solve and complete 19 various types of problems. First, they draw the square shown and divide its sections as shown. Then, students cut out the 6 parts of the square and rearrange the 4...
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Lesson Plan
Curated OER

Triangles

For Teachers 6th - 10th
Learners identify triangles in the real world and construct their own triangle using drinking straws. They explore abstract triangles and find additional geometric shapes such as trapezoids. Students discuss similar shapes and examine...
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Lesson Plan
Curated OER

Investigation-Mathematical Reasoning: Tables and Chairs

For Teachers 4th
Fourth graders design a table and chair arrangement. For this mathematical reasoning lesson, 4th graders place tables shaped like equilateral triangles so that they seat the appropriate number of guests. 
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Lesson Plan
Curated OER

Area Measures and Right Triangles

For Teachers 9th - 12th Standards
Your class will investigate the relationship among different triangles. This geometry lesson, demonstrates how to make a connection between triangles and the Pythagorean Theorem. They identify the missing side or angle of a triangle.
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Worksheet
Curated OER

Review of Trig Ratios

For Students 11th - Higher Ed
In this trigonometric ratios worksheet, students solve and complete 10 various types of problems. First, they write the degrees listed in radian measure. Then, students find the exact ratios for each equation. They also find the value of...
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Worksheet
Curated OER

Properties of Angles, Lines, and Triangles

For Students 10th
In this properties of angles, lines and triangles instructional activity, 10th graders solve and complete 28 different problems that include determining the measurement of various figures shown. First, they use the geometric properties...
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Worksheet
Curated OER

Triangles

For Students 6th - 10th
In this triangles worksheet, learners solve six word problems where they determine the angles measures in different triangles.
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Worksheet
Curated OER

Geometry Course Review

For Students 10th
In this geometry review set of worksheet, 10th graders solve and complete 139 various types of problems. First, they find the slope-intercept form of a line passing through a point and parallel to a line given. Then, students find the...
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Lesson Plan
Curated OER

Exploring Centers of a Triangle: Part 2

For Teachers 10th - 12th
Students model and solve a real-world problem by constructing the centroid of a triangle. They explore relationships of the medians of a triangle and investigate how the centroid partitions each of the medians. Students investigate...
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Worksheet
Curated OER

Hands On: Construct Triangles and Rectangles

For Students 4th - 7th
In this congruent triangles and rectangles worksheet, students solve 6 word problems where they identify whether triangles and rectangles are congruent, and construct triangles. Students must explain their reasoning and prove each answer.
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Worksheet
Curated OER

Special Right Triangles Homework

For Students 9th - 12th
In this geometry worksheet, learners solve both kinds of special right triangles. There are 12 questions with multiple parts.
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Worksheet
Curated OER

Right Triangles

For Students 10th
For this right triangles worksheet, 10th graders solve and complete 12 different types of problems. First, they solve for a variable given each of the right triangles with the sides as indicated. Then, students determine the shorter...
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Worksheet
Curated OER

Algebraic Equations

For Students 7th - 8th
In this algebraic equations learning exercise, students solve 9 different problems that include various types of equations used on the sheet. First, they determine the solution of a given inequality. Then, students write the greatest...
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Instructional Video3:10
Corbett Maths

Hexagon Inscribed Within a Circle

For Students 8th - 12th Standards
Mark off the length of the radius around the circle. Using a compass, the presenter shows how to construct a regular hexagon in a circle. Pupils see how triangles formed in the hexagon are equilateral, allowing for the construction to...
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Worksheet
Curated OER

Classifying Triangles

For Students 8th - 10th
In this classifying triangles worksheet, students explore given lengths or angle measurements and then classify each triangle as isosceles, scalene or equilateral. They also determine if the triangle may be right, acute or obtuse. This...
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Worksheet
Curated OER

Triangles

For Students 10th
In this triangles worksheet, 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 classify the...
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Lesson Plan
Curated OER

The Truth About Triangles And Proofs

For Teachers 9th - 12th
Students engage in a lesson plan that is about the classification of triangles and the mathematical proofs involved in working with them. They work on a variety of problems that are created by the teacher with the focus upon the...
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Lesson Plan
Curated OER

Triangles

For Teachers 4th
Fourth graders participate in three experiments to gain understanding of triangles. In this triangles lesson, 4th graders use pipe cleaners to create bubble pipes, basketball hoops and bingo cards to display the characteristics of...
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Worksheet
Raytheon

Understanding Triangles

For Students 6th - 8th
In this understanding triangles worksheet, learners read 6 pages of examples and explanations about identifying triangles, determining length of sides and degrees of angles, including the hypotenuse, then answer 28 questions, answers...
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Lesson Plan
Curated OER

Angles, Triangles, Quadrilaterals, Circles and Related

For Teachers 6th - 8th
Students classify angles. In this angles lesson, students explore the characteristics of angles, triangles, quadrilaterals and circles. They identify polygons and sing a classifying angles song. Students participate in a manipulative...
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Lesson Plan
Curated OER

Triangle Foldable

For Teachers 4th - 5th
In this math worksheet, students cut out six cards with the names of different triangles. Triangles include equilateral, scalene, and isosceles.
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Worksheet
Curated OER

Math Leagues Contest 1

For Students 8th
In this basic algebra activity, 8th graders solve and complete 6 different types of algebra problems as described in each box. First, they determine the value of a set of numbers with one pair of positive integers. Then, students...
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Lesson Plan
Curated OER

Right Triangles

For Teachers 4th - 8th
Learners classify triangles and make connections regarding angle measurements and attributes of acute, right, and obtuse triangles. They listen to teacher define and explain triangles. Everyone imagines a place where a broken wing for a...
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Lesson Plan
Curated OER

Cabri Jr. - Getting Started with Triangles

For Teachers 9th - 12th Standards
High schoolers explore a basic triangle construction. In this beginning geometry lesson, students investigate the steps to necessary to create an equilateral triangle with Cabri Jr.;

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