Paulo Ferro
@pauloferro.bsky.social
Math teacher and published author
https://blogenigmath.wordpress.com
https://blogenigmath.wordpress.com
Puzzle #1
Level of difficulty: ⭐⭐
The isosceles trapezoid/trapezium is composed of seven matchsticks.
Modify the position of three matchsticks to get two equilateral triangles.
This puzzle was published on @nctm.org and on @theguardian.com.
Solution in the comments.
#ENIGMATH #math #puzzle
Level of difficulty: ⭐⭐
The isosceles trapezoid/trapezium is composed of seven matchsticks.
Modify the position of three matchsticks to get two equilateral triangles.
This puzzle was published on @nctm.org and on @theguardian.com.
Solution in the comments.
#ENIGMATH #math #puzzle
February 1, 2026 at 8:08 AM
Puzzle #1
Level of difficulty: ⭐⭐
The isosceles trapezoid/trapezium is composed of seven matchsticks.
Modify the position of three matchsticks to get two equilateral triangles.
This puzzle was published on @nctm.org and on @theguardian.com.
Solution in the comments.
#ENIGMATH #math #puzzle
Level of difficulty: ⭐⭐
The isosceles trapezoid/trapezium is composed of seven matchsticks.
Modify the position of three matchsticks to get two equilateral triangles.
This puzzle was published on @nctm.org and on @theguardian.com.
Solution in the comments.
#ENIGMATH #math #puzzle