📐 Shape Properties 📚 Grade 2-3 ⏱ 6 min
Properties of Shapes: Sides, Angles, Vertices
Every shape has a set of features — number of sides, angles, vertices. Here is how to count and compare them.
Three main features
What to count on a shape:
Sides — straight lines the shape is made of
Angles — places where sides meet
Vertices — points where sides cross
Sides — straight lines the shape is made of
Angles — places where sides meet
Vertices — points where sides cross
Counting on a triangle
A triangle has 3 sides, 3 angles, 3 vertices — all numbers match. A square has 4, 4, 4.
Comparing shapes by feature
What is different between a square and a triangle? The count of sides, angles, and vertices — a square has one more of each.
FAQ
Do all shapes have matching side and angle counts?
Yes, for polygons the number of sides always equals the number of angles and vertices.