Help please! what does x equal

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

Jayda's house is located at (1, 5). she can walk in a straight line to get to cristian's house. a fast-food restaurant is located at (11, 0) and partitions the way from jayda's house to cristian's house by a ratio of 5: 1. find the coordinate of cristian's house. me . im a little stuck

If lmn=xyz, which congruences are true by cpctc? check all that apply