The topic of my paper is “there are no convex polygons with more than 6 sides that tessellate” So, you could start by explaining why every triangle tessellates the plane. Then, you could explain why any parallelogram tessellates the plane. What about quadrilaterals in general? Do they always tessellate? How about pentagons? Then, lastly hexagons: regular hexagons tessellate, but not all hexagons do. Make sure to describe everything in details!