A vertex is a point or corner where two straight sides of a two-dimensional shape meet. Learners identify and count the vertices of familiar shapes, such as triangles, rectangles, squares, and other simple polygons, regardless of their size or orientation, while recognizing that a circle has no vertices; formal angle measures, complex polygons, and three-dimensional vertices are beyond this understanding.
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Detailed Explanation: Describe shapes by vertices
A vertex is a corner where two straight sides meet.
To count vertices:
- Start at one corner.
- Touch or point to each corner as you go around the shape.
- Count each corner only once.
Example: How many vertices does this rectangle have?
Imagine a rectangle with corners labeled , , , and .
- Corner is one vertex.
- Corner is two vertices.
- Corner is three vertices.
- Corner is four vertices.
So, the rectangle has vertices.
Remember: A shape can be turned or made bigger, but its number of vertices stays the same. A circle has no vertices because it has no corners.
Learn by doing: Describe shapes by vertices
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Practice:
Count Vertices on 2D Shapes
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Download/Modify Free Grade 1 'Describe shapes by vertices' Worksheet
Print this free 'Describe shapes by vertices' worksheet to practice this skill away from the computer. Click 'Modify' to easily customize this worksheet to your exact needs.
This Worksheet Includes:
- Count Vertices on 2D Shapes
- Count Vertices on 2D Shapes - First Time
- Count Sides and Vertices on 2D Shapes
- Count Sides and Vertices on 2D Shapes - First Time
- Count Sides on 2D Shapes
- Count Sides on 2D Shapes - First Time
- 2D Shapes by Side Count
- 2D Shapes by Vertex Count
Units Teaching This Skill
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