Can someone help me?, I had the notes in my notebook but the notebook got full, so I threw it away not thinking I was gonna need these notes again ;(

An angle that measures between 90 and 180° is called a(,

The lengths of all sides of a triangle are integers when measured in decimeters. one of the sides has length of 1 dm and another of 3 dm. find the perimeter of the triangle.'

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?