Which of these is open and which is closed

I'm confused on how to solve the triangle. can someone me ?

Jonathas wants to get a cell phone. the phone costs $59 and the plan costs $39 per month.

Some of the images in the diagram are images of polygon 1. from similarity transformations, polygon 1 16 14 polygon 4 polygona polygons 4 6 8 10 12 14 16 18 20 22 24 26 polygon and polygon are similar to polygon 1,