figuratenumbers
nounUK /ˈfɪɡjərət ˈnʌmbəz/
US /ˈfɪɡjərət ˈnʌmbərz/
Figurate numbers are numbers you can make by arranging dots into shapes like triangles or squares.
The teacher showed us that 10 is a figurate number because you can arrange ten dots into a triangle.
OTHER MEANINGS
2. Numbers that can be shown as dots arranged in a regular polygon.
Six is a triangular figurate number because it forms a triangle of dots.
3. A sequence of numbers built by adding layers of dots around a shape.
The figurate numbers grow as you add another row of dots to the shape.
4. Numbers studied in math to connect counting with geometry.
Students learned about figurate numbers to see how shapes and counting are linked.