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Handout
CK-12 Foundation

Ck 12: Geometry: Triangles and Quadrilaterals Study Guide

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] This study guide reviews the formulas for area and perimeter of triangles and different kinds of quadrilaterals.
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Unknown Type
Khan Academy

Khan Academy: Use Pythagorean Theorem to Find Area and Perimeter

For Students 7th - 8th
Find the area and perimeter of triangles and quadrilaterals by first using the Pythagorean Theorem to find missing side lengths. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or...
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eBook
Other

Algebra Lab: Areas and Perimeters of Triangles and Special Quadrilaterals

For Students 6th - 7th Standards
Learn how to find the areas and perimeters of triangles and special quadrilaterals.
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Activity
CK-12 Foundation

Ck 12: Area and Perimeter of Triangles

For Students 9th - 10th Standards
[Free Registration/Login Required] Students are given the base and height of a triangle and are to determine the area and perimeter. Click challenge me to answer practice questions and click learn more to watch a video.
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Unknown Type
Khan Academy

Khan Academy: Area and Perimeter on the Coordinate Plane

For Students 9th - 10th Standards
Find the area or perimeter of shapes like triangles, rectangles, parallelograms, and hexagons on the coordinate plane. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Unknown Type
Khan Academy

Khan Academy: Area & Perimeter on the Coordinate Plane

For Students 9th - 10th Standards
Find the area or perimeter of shapes like triangles, rectangles, parallelograms, and hexagons on the coordinate plane.
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Unit Plan
CK-12 Foundation

Ck 12: Geometry: Area and Perimeter of Triangles

For Students 6th - 9th Standards
[Free Registration/Login may be required to access all resource tools.] In this lesson students use formulas and given information to figure out the dimensions and the area of different triangles. Students examine guided notes, review...
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Activity
CK-12 Foundation

Ck 12: Area and Perimeter of Triangles

For Students 9th - 10th Standards
[Free Registration/Login Required] Students explore the relationship between and area and the base and height of a triangle. Click challenge me to answer practice questions and click learn more to watch a video.
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Unit Plan
Cuemath

Cuemath: Triangles

For Students 5th - 8th Standards
Explore everything about triangles. Learn about the different types, important properties, and how to find its area and perimeter. Check out the solved examples and interactive questions for better understanding.
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Activity
Shodor Education Foundation

Shodor Interactivate: Triangle Explorer

For Students 9th - 10th Standards
This applet allows users to study the nature of triangles and their area. It draws random triangles on a Cartesian coordinate system. The user can determine the area of the triangle using his or her preferred method. After the calculated...
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Handout
CK-12 Foundation

Ck 12: Geometry: Perimeter and Area Study Guide

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] This study guide looks at the definitions and units for perimeter, area, and circumference, and at the perimeter and area of different shapes, including regular...
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Activity
The Math League

The Math League: Area and Perimeter

For Students 9th - 10th Standards
This tutorial provides a brief introduction about what area is, then gives the formulas for area of a square, rectangle, parallelogram, trapezoid, triangle, and circle. Examples of each formula are provided.
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Activity
Discovery Education

Discovery Education: Web Math: Find Out Things About a Right Triangle

For Students 9th - 10th Standards
Gives basic info about a right triangle. Also students can substitute values for sides or angles in order to find missing values. The method for solving is then explained.
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Unit Plan
University of Georgia

University of Georgia: Inter Math: Recommended Investigations of the Triangle

For Students 9th - 10th
Investigate the qualities of a triangle with these seventeen word problems. Many include ways to extend the lesson.
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Unknown Type
Math Slice

Math Slice: Area & Perimeter: Math Worksheets

For Students 3rd - 5th Standards
This tool allows you to create worksheets of word problems at varying levels of difficulty where students must calculate the area or perimeter of different polygon shapes. You can choose to set up the page using any of these polygon...
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Activity
Texas Instruments

Texas Instruments: Area of Triangle

For Teachers 9th - 10th Standards
This Cabri Geometry activity enables students to review the relationship between the height of a triangle and its perimeter and area.
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Unknown Type
McGraw Hill

Glencoe: Self Check Quizzes 1 Area of Triangles

For Students 9th - 10th
Use Glencoe's randomly generated self-checking quiz to test your knowledge of finding the area of a triangle. Each question has a "Hint" link to help. Choose the correct answer for each problem. At the bottom of the page click the "Check...
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Unknown Type
That Quiz

That Quiz: Practice Test: Triangles

For Students 9th - 10th Standards
Test your knowledge on the attributes of triangles. There are eleven levels that may be completed with or without a timer.
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Unit Plan
Khan Academy

Khan Academy: Area of Right Triangles

For Students 5th - 7th Standards
Find the area of right triangles Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Unit Plan
Khan Academy

Khan Academy: Find Missing Length When Given Area of a Triangle

For Students 5th - 7th
Find the base or height of a triangle when given the other and the area. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Unit Plan
CK-12 Foundation

Ck 12: Geometry: Area of Composite Shapes Involving Triangles

For Students 6th - 8th
[Free Registration/Login may be required to access all resource tools.] In this lesson students find areas of combined figures involving triangles. Students examine guided notes, review guided practice, watch instructional videos and...
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Unit Plan
Cuemath

Cuemath: Right Angled Triangle

For Students 9th - 10th Standards
Explore and learn about the features and properties of a right triangle in this lesson. Includes examples and practice questions.
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Unit Plan
CK-12 Foundation

Ck 12: Geometry: Triangle Area Grades 6 7

For Students 6th - 7th
[Free Registration/Login may be required to access all resource tools.] Find the areas of triangles given their base and height dimensions.
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Lesson Plan
Better Lesson

Better Lesson: Area of Triangles

For Teachers 6th Standards
Sixth graders apply what they know about area of other polygons to develop a formula for finding the area of a triangle.

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