20 questions
6th - 6th Grade
Mathematics
Area and Perimeter of Triangles is a Grade 6 mathematics worksheet that helps students distinguish between two essential measurement skills: finding the area inside a triangle and finding the distance around it. Across 20 multiple-choice questions, students use triangle measurements to select areas in square units and perimeters in linear units, including problems with whole numbers and decimals. The worksheet also connects these calculations to practical situations, such as determining fabric for a triangular scarf, trim for artwork, and the distance walked around a triangular park over several trips. These contexts require students to identify whether a problem calls for area or perimeter and interpret the answer using appropriate units. Use this free printable worksheet with the included answer key for independent practice, review, homework, or a quick formative assessment of triangle measurement skills.
Worksheet settings
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WorksheetsAnswer Key46.2 ft2
27.3 mi2
12 in.
20 cm
14.7 cm2
22 inches
51 units
base and height
A=1/2 (B x H)
This Grade 6 worksheet contains 20 multiple-choice questions on finding the area and perimeter of triangles. Students calculate area for the space inside a triangle, calculate perimeter by combining its side lengths, and select answers with the correct square or linear units. Several items apply these skills to situations such as making a triangular scarf, adding trim, and walking around a triangular park.
Introduce the worksheet by having students compare what area measures inside a triangle with what perimeter measures around its edges. Model one area item and one perimeter item, emphasizing the difference between square units and linear units, then have students explain which measurement a context such as fabric, trim, or repeated trips around a park requires. Use the multiple-choice options to discuss why plausible answers may result from adding instead of multiplying or using the wrong unit.
Watch for students choosing a perimeter when a problem asks for the area, or choosing an area when a situation asks for distance around a triangle. Students may also forget the one-half factor in a triangle-area calculation, add only two side lengths for perimeter, or report square units for perimeter and linear units for area. In the park problem, check that students multiply one trip around the triangle by the stated three trips.
The Area and Perimeter of Triangles worksheet is available as a printable PDF and as a digital quiz on Wayground, and it includes a complete answer key. For printable submissions, you can scan student work with the Wayground for Teachers app to support grading. The printable version also gives schools an option for reducing screen time.
Use the worksheet’s Advanced Settings to create an alternate version with increased font spacing or a larger font size, making the 20 multiple-choice items easier to navigate. You can also apply a dyslexia-friendly font or translate the triangle area and perimeter questions into another language when appropriate.
Wayground offers a comprehensive collection of free printable worksheets and practice problems across all subjects, with downloadable PDFs and answer keys to help students master essential skills and concepts. Browse more resources at https://wayground.com/en-us/worksheets.
