Grade 1 · Math · Geometry · Standard
Build Grade 1 geometry skills by asking learners to identify defining shape attributes, recognize two-dimensional and three-dimensional shapes, compose shapes, and reason about equal shares across 16 checked items with a complete answer key.
- Questions
- 16
- Pages
- 4
- Paper
- letter
- Answer key
- Included
Common Core standards practiced
- 1.G.A.1 Tell defining attributes of shapes
- 1.G.A.2 Compose two- and three-dimensional shapes
- 1.G.A.3 Split circles and rectangles into halves and fourths

Answer key included on page 4.
What students practice
This Grade 1 standard geometry worksheet contains 16 complete items. Learners identify defining shape attributes, recognize two-dimensional and three-dimensional shapes, compose shapes, and reason about equal shares.
PDF and answer key
The 4-page US Letter PDF has 3 activity pages followed by a complete answer key on page 4. The preview shows the first activity page.
How to use this worksheet
Ask the learner to complete every item before checking the answer key. For missed items, name the defining attribute or equal-share idea that supports each answer.