In pentagon ABCDE, shown below, A measures 50°. What is the total measure of the other 4 interior angles? O 130°
O 200°
O 310°
O 432°
O 490°

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.

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

Isaac wants the equation below to have no solution when the missing number is placed in the box. which number should he place in the box?