Worksheet directions

Grade 6 • Review • Choose a strategy for each problem. Explain or check your thinking where requested.

Sample questions

1. A student reports 60 cm² for a triangle with base 12 cm and height 5 cm. Explain the missing step and correct the area.
2. Measurements are in centimeters. Find the triangle’s area and explain why the dashed perpendicular segment is used as the height.
3. A right-triangular sign has perpendicular sides 9 cm and 6 cm. Two identical signs are cut from a sheet. Find their combined area and explain why you can use a rectangle or parallelogram to check.
4. A triangle has base 11 cm and perpendicular height 4 cm. Sketch two congruent copies forming a parallelogram and explain the area formula.
5. A right-triangular sign has perpendicular sides 13 cm and 6 cm. Two identical signs are cut from a sheet. Find their combined area and explain why you can use a rectangle or parallelogram to check.
6. Sketch a second congruent copy of this triangle to form a parallelogram. Explain how this gives the triangle’s area.

See the preview for diagrams, answer spaces, and the complete layout.

Common Core connections

Source labels: 4.MD.A.3, prerequisite for 6.G.A.1, 6.G.A.1. Review the learning goals below to check the fit for your class.

• 4.MD.A.3 — Area and perimeter formulas
• 6.G.A.1 — Area of triangles and polygons

Bring it into your lesson

Review the preview and question content above. Open the resource in Sparkclass to copy it to your Files and use it in your workspace. Check the resulting layout before sharing it with students.