七角形: heptagon

an octagon

a heptagon

tight / reliable

be fast, securely in place / be reliable, level-headed / keep going, keep trying

stable, fulfilled

fast (in a firm or secure manner), tightly / surely, unwaveringly, steadily, reliably

近く: soon, before long

近く: the vicinity, the neighborhood

to paint; to draw / to picture; to portray; to depict / to imagine