Classify each triangle by its angles and sides. 11)
60°
9.1
9.1
60°
60°
9.1

[10 points, algebra 2-simplifying complex fractions]according to my answer key the restrictions are -1 and 4. but why not positive 1?

Rewrite so the subject can be y in the formula d=m-y/y+n

The construction of copying qpr is started below. the next step is to set the width of the compass to the length of ab. how does this step ensure that a new angle will be congruent to the original angle?