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Two Triangles Make a Square is a free printable Kindergarten math worksheet on composing a larger shape from smaller ones, aligned to Common Core standard K.G.B.6. It prints 5 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two students in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

Set 1 of 25 · the same problems every time you open this link.

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One paper per student

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All 25 sets ask different questions.

Two Triangles Make a Square

K.G.B.6

NameDate

Sort each one into the right box.

1.Sort each one into the right box.

Sort: two half circles, two squares side by side, one triangle, two circles

Can make a squareCannot make a square
2.Sort each one into the right box.

Sort: four small squares, two triangles cut corner to corner from a square, two rectangles cut from a square, two squares side by side

Can make a squareCannot make a square
3.Sort each one into the right box.

Sort: two half circles, four small squares, two squares side by side, two triangles cut corner to corner from a square

Can make a squareCannot make a square
4.Sort each one into the right box.

Sort: two squares side by side, two triangles cut corner to corner from a square, nine small squares in rows of three, three squares in a row

Can make a squareCannot make a square
5.Sort each one into the right box.

Sort: three squares in a row, two circles, a circle and a triangle, two squares side by side

Can make a squareCannot make a square

LessonPrint · K.G.B.6 · Set 1 · free to copy for classroom use

Answer key — Two Triangles Make a Square

Set 1. Prints on its own sheet.

  1. 1.Can make a square: —; Cannot make a square: two half circles, two squares side by side, one triangle, two circles
  2. 2.Can make a square: four small squares, two triangles cut corner to corner from a square, two rectangles cut from a square; Cannot make a square: two squares side by side
  3. 3.Can make a square: four small squares, two triangles cut corner to corner from a square; Cannot make a square: two half circles, two squares side by side
  4. 4.Can make a square: two triangles cut corner to corner from a square, nine small squares in rows of three; Cannot make a square: two squares side by side, three squares in a row
  5. 5.Can make a square: —; Cannot make a square: three squares in a row, two circles, a circle and a triangle, two squares side by side

Questions about Two Triangles Make a Square

What does the Two Triangles Make a Square worksheet cover?

It practices composing a larger shape from smaller ones — 5 questions for Kindergarten, all on Common Core K.G.B.6: Put small shapes together to build bigger ones. The instruction to students is “Sort each one into the right box”, and the answer key follows on the next sheet.

Which Common Core standard does Two Triangles Make a Square practice?

CCSS.MATH.CONTENT.K.G.B.6 — K.G.B.6, under Geometry for Kindergarten. The published standard reads: “Compose simple shapes to form larger shapes.” The worksheet assesses that standard rather than a paraphrase of it.

What age or grade is this worksheet for?

Two Triangles Make a Square is written for Kindergarten, typically ages 5-6. It is one of the sheets on K.G.B.6, so it suits any student working at that standard — including older students revisiting it and younger ones working ahead.

Does Two Triangles Make a Square come with an answer key?

Yes. All 5 answers are generated from the same problems as the questions, so the key cannot drift out of step with the sheet. It starts on a fresh sheet of paper, after the questions, so it is not handed out with the class by accident.

How many different versions of Two Triangles Make a Square can I print?

25 — one per student, and all 25 ask different questions. Set 1 downloads the whole class as a single PDF. Every version is fixed to its own address, so a sheet printed today holds the same problems when you reopen it next week.

Is Two Triangles Make a Square free to print and photocopy?

Yes. Two Triangles Make a Square, its answer key and its 25 versions are free to print and photocopy for your own class, with no account, no email capture and no subscription at the download step. Please do not resell them or republish them as your own.

Is there a lesson plan to teach K.G.B.6?

Yes — “Building Bigger Shapes from Smaller” is a 30-minute Kindergarten plan for K.G.B.6, timed section by section, with the misconceptions to expect and an exit ticket. Two Triangles Make a Square is the practice that follows it.

More practice for K.G.B.6

Put small shapes together to build bigger ones.

Teaching this next? Building Bigger Shapes from Smaller is the 30-minute plan for it, with the misconceptions to expect.

All Kindergarten worksheets

Last reviewed 2026-09-05. Aligned to K.G.B.6 of the Common Core State Standards for Mathematics.