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NRICH: Diagonals

How many diagonals does a regular icosagon (20 sides) have?

Age 14 to 16
NRICH (University of Cambridge)
Math Topics
Geometry, Patterning & Sequencing
High School
9th Grade, 10th Grade, 11th Grade
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NRICH (University of Cambridge)

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NRICH (University of Cambridge)

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NRICH: Diagonals

How many diagonals does a regular icosagon (20 sides) have?

Age 14 to 16
NRICH (University of Cambridge)
Math Topics
Geometry, Patterning & Sequencing
High School
9th Grade, 10th Grade, 11th Grade

What are you looking for?

Organization

NRICH (University of Cambridge)

Website URL

Type of Resource

Challenge

Assigned Categories