Question 774748
You can draw FI, IV, VE and ER, according to instructions, maybe like this:
{{{drawing(250,200,-1,12.5,-1,9,
line(0,0,0,4),line(0,0,8,0),
line(8,0,11,4),line(11,4,8,8),
locate(-0.3,0,I),locate(-0.6,4.4,F),
locate(8,0,V),locate(11,4.4,E),locate(8.1,8.6,R)
)}}}
I made IV twice as long as FI
I made VE and ER symmetrical (VER would be an isosceles triangle)
Luckily, there is no requirement for the length of RF, or else we would be in trouble. We can let RF be as long as it will turn out:
{{{drawing(250,200,-1,12.5,-1,9,
line(0,0,0,4),line(0,0,8,0),
line(8,0,11,4),line(11,4,8,8),
locate(-0.3,0,I),locate(-0.6,4.4,F),
locate(8,0,V),locate(11,4.4,E),
locate(8.1,8.6,R),line(0,4,8,8)
)}}}