▁be ▁ 1 1 2 - 1 2 2 ▁by ▁ 6 8 ▁metres ▁( 1 2 2 . 5 - 1 3 3 . 4 ▁× ▁ 7 4 . 3 ▁yards ). ▁The ▁longer ▁boundary ▁lines ▁are ▁touch ▁lines , ▁while ▁the ▁shorter ▁boundary ▁lines ▁are ▁dead ▁ball ▁lines . ▁The ▁touch ▁lines ▁and ▁dead ▁ball ▁lines ▁are ▁out ▁of ▁play . ▁Near ▁each ▁end ▁of ▁the ▁field ▁is ▁a ▁goal ▁line , ▁or ▁try - line ; ▁they ▁are ▁ 1 0 0 ▁metres ▁( 1 0 9 . 4 ▁yards ) ▁apart . ▁A ▁scoring ▁area ▁equivalent ▁to ▁an ▁end - zone ▁called ▁the ▁in - goal ▁area ▁extends ▁ 6 – 1 1 ▁metres ▁( 6 . 6 - 1 2 ▁yards ) ▁from ▁each ▁try - line ▁to ▁each ▁dead ▁ball ▁line , ▁the ▁ball ▁may ▁be ▁ground ed ▁to ▁score ▁a ▁try ▁here . ▁On ▁the ▁goal ▁line ▁are ▁a ▁set ▁of ▁goal ▁posts ▁in ▁the ▁shape ▁of ▁the ▁letter ▁' H ', ▁used ▁for ▁other ▁forms ▁of ▁point ▁scoring : ▁drop ▁goal , ▁penalty ▁goal ▁and ▁conversion . ▁ ▁Play ers ▁ ▁Canadian ▁teams ▁have ▁twelve ▁players ▁on ▁the ▁field ▁per ▁side . ▁D ifferent ▁players ▁may ▁be ▁inter changed ▁at ▁will ▁for ▁off ence ▁and ▁defence ▁as ▁well ▁as ▁special ▁teams ▁for ▁specific ▁activities . ▁ ▁In ▁rugby ▁league ▁the ▁same ▁players ▁both ▁defend ▁and ▁attack ▁- ▁a ▁system ▁known ▁as ▁the ▁one - pl ato on ▁system ▁in ▁Canadian ▁football . ▁There ▁are