How can postulates and theorems relating to similar and congruent triangles be used to write a proof?​

How many sides does a regular polygon have if each exterior angle measures 72a.3b.4c.5d.6

Mario has $14.35 left in his wallet. he spent $148.43 for tablecloths. then, he spent $92.05 for napkins. how much money did mario have in his wallet to start with?

Segment an is an altitude of right δabc with a right angle at a. if ab = 2, squared 5 in and nc = 1 in, find bn, an, ac.