Type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar.
polygon abcd is a parallelogram, and m-abc = 127º. the length of bc is 10 units, and the length of ab is 5 units.
the perimeter of the parallelogram is
1
units, and m
bcd is

I’d say letter a..

“exterior angles of triangles. an exterior (or external) angle is the angle between one side of a triangle and the extension of an adjacent side. try this drag the orange dots on any vertex to reshape the triangle.” look to get to the answer i explained what it means and other things i hope it you .