en_tq/exo/26/17.md

# What must be in each board for joining them to each other?

There must be two projections in each board for joining the boards to each other.
fixed markdown header format 2017-05-05 18:59:48 +00:00			`# What must be in each board for joining them to each other?`
added version 1 2017-04-15 00:21:37 +00:00
removed passage links from questions 2017-05-05 19:19:32 +00:00			`There must be two projections in each board for joining the boards to each other.`