You would continue the pattern by drawing a hexagon(6-sided figure), then a heptagon(7-sided figure), and finally draw an octagon(8-sided figure).
The pattern is: Each new shape adds an extra side. Like how it went from triangle(3-sided), to square(4-sided), to pentagon(5-sided).
I would draw a picture for you, but I don't have the best hand-writing haha. Anyway, I hope this helped 1000025!