Geometry
Figure perimeter
Name: Date:
Add every side. All lengths are in centimetres.
1 cm
2 cm
3 cm
4 cm
5 cm
6 cm
7 cm
8 cm
Free · Grades 3-4 · Sides to 35 cm
Perimeter of triangles and quadrilaterals worksheets
Working on perimeter of triangles and quadrilaterals? Print this sheet as it is, or change the level and questions first.
- Answer key included
- Reopen this exact sheet
- Letter & A4 ready
Ready to printPerimeter of triangles and quadrilaterals
The answer key prints on a separate page.
What's on this sheet
Every edge carries its own number, including the slanted ones. That is the opposite of the area sheets, where slant sides are deliberately left unlabelled so a child cannot mistake one for the height — here every side counts towards the answer, so a figure with an unlabelled edge would be unanswerable rather than harder.
Why this sheet works
The shapes are built from their side lengths rather than sketched, which means a triangle with sides 14, 13, and 17 is drawn as exactly that triangle. Two sheets with different numbers can never come out as the same picture, and a child checking their answer against the drawing is doing something the drawing supports.