PLS HELP THIS IS HARD WLHI HURRY PLS

A. 90 degrees b. 45 degrees c. 30 degrees d. 120 degrees

The coordinates r(1, -3), s(3, -1) t(5, -7) form what type of polygon? a right triangle an acute triangle an equilateral triangle an obtuse triangle

In dire need~! describe how to use area models to find the quotient 2/3 divided by 1/5. check your work by also finding the quotient 2/3 divided by 1/5 using numerical operations only.