Classify triangles by angle measures as acute, right, or obtuse and by side lengths as equilateral, isosceles, or scalene, and classify quadrilaterals hierarchically using properties such as parallel or perpendicular sides, congruent side lengths, and right angles, including trapezoids, parallelograms, rectangles, rhombuses, squares, and kites. Identify, measure, and draw angles from 0° to 180° with a protractor, correctly distinguishing acute, right, obtuse, and straight angles regardless of ray length or orientation. Identify lines of symmetry, parallel lines, and perpendicular lines, and plot and interpret points represented by nonnegative whole-number ordered pairs in the first quadrant of the coordinate plane.
On this page:
- Master skills like “Classify quadrilaterals”, “Identify parallel lines”, and “Identify lines of symmetry” with unlimited, free practice problems
- Download (or modify) free worksheets on Geometry you can use at home or in class with practice problems across all skills in this group including “Identify and measure angles”, “Classify triangles by angles”, “Identify perpendicular lines”.
- Start working on adaptive units like “Geometry - Shape Classification (2D) - Advanced” or “Geometry - Angles and Transformations - Intro” that include these skills and will introduce and scaffold the skills carefully for maximum learning.
Geometry: Individual Skills
Master 10 individual skills with free practice problems. Mouseover to see the skill's practice problems. Create a free account to track your progress.
Your results
- Classify quadrilaterals
- Classify triangles by angles
- Classify triangles by side lengths
- Identify acute, right, obtuse, and straight angles
- Identify and measure angles
- Identify lines of symmetry
- Identify parallel lines
- Identify perpendicular lines
- Plot and identify points on the first quadrant of the coordinate plane
- Use a protractor to measure angles
Practice 'Classify quadrilaterals'
Select any skill in this group by hovering over the list above. Unlimited free practice problems, automatically graded.
Hover a skill above to start practicing.
Download/Modify Free Grade 5 'Geometry' Worksheet
Print this free 'Geometry' worksheet to practice these skills away from the computer. Click 'Modify' to easily customize this worksheet to your exact needs.
This Worksheet Includes:
- Classify quadrilaterals
- Classify triangles by angles
- Classify triangles by side lengths
- Identify acute, right, obtuse, and straight angles
- Identify and measure angles
- Identify lines of symmetry
- Identify parallel lines
- Identify perpendicular lines
Units Teaching These Skills
These adaptive units introduce, teach, or reinforce skills in this group (Geometry) through scaffolded problems that grow in difficulty as concepts are understood.