Shape Sorter & Attribute Detective
Look at each shape and count its sides and corners. Sort shapes by their attributes to become a shape detective. Works with circles, triangles, squares, and more.
Score: 0Streak: 0
Shape Detective
3 sides, 3 corners
How many sides does this shape have?
Shape Sorter
Shapes are sorted into groups. Look at each group and count to check.
0 sides
Circle
3 sides
Triangle
4 sides
Square
Rectangle
5 sides
Pentagon
6 sides
Hexagon
Reference Guide
2D Shape Attributes
- Sides are the straight line segments that form the border.
- Corners (vertices) are where two sides meet.
- A circle has no sides and no corners.
- Most shapes have the same number of sides and corners.
Shape Quick Reference
- Triangle: 3 sides, 3 corners
- Square: 4 equal sides, 4 corners
- Rectangle: 4 sides, 4 corners (pairs of equal sides)
- Pentagon: 5 sides, 5 corners
- Hexagon: 6 sides, 6 corners
Related Content
Related Tools
Order of Operations (PEMDAS) Solver
Enter any expression and watch it solve step by step following PEMDAS. Each operation is color-coded so you see exactly what happens and why.
Long Division Solver
See long division worked out step by step with the traditional layout, divide-multiply-subtract-bring-down explanations, and remainder or decimal results.
Decimal, Fraction & Percent Converter
Type a decimal, fraction, or percent and the other two update instantly. Pie chart, 100-grid, and number line show the same value three ways.
Factor Tree & GCF/LCM Calculator
Build visual factor trees, find prime factorizations, and compute GCF and LCM with a Venn diagram of shared prime factors.
Related Labs
Shape Sorter & Compose Shapes Lab
Classify 2D shapes by attributes and combine small shapes to build larger ones. Investigate how sides and corners relate, and how simple shapes compose into complex ones. Grades K-1.
Shape Classifier Lab
Explore 12 geometric shapes from triangles to circles. Inspect sides, angles, parallel pairs, and lines of symmetry for each shape, then record your findings to discover the properties that define each shape family.
Symmetry & Pattern Blocks Lab
Investigate lines of symmetry in 10 shapes. Toggle vertical, horizontal, and diagonal fold lines to discover which shapes have the most symmetry, then record your findings and look for patterns across regular and irregular shapes.
Shape Detective & Angle Hunt Lab
Hunt for angles in 8 different shapes. Classify each angle as acute, right, obtuse, or straight, then identify what type of triangle or quadrilateral each shape is.
