Bonjour je n'arrive pas à faire mon exercice de maths: les 2 voiles de ce bateau sont des triangles semblables. calculez la hauteur de la petite voile

Find the measure of the interior angles of the following regular polygons: a triangle, a quadrilateral, a pentagon, an octagon, a decagon, a 30-gon, a 50-gon, and a 100-gon.

Liz had 140 pens and inna had 100 pens. after inna gave liz some pens, liz had 3 times as many pens as inna. how many pens did inna give liz?

Combine the information in the problem and the chart using the average balance method to solve the problem.