a = ( 1 , 6 )
b = ( 4 , 9 )

Now just need to put the coordinates in the above equation :



And we're done...♥️♥️♥️♥️♥️
Answer:
First 3 boxes down are Vertical, Complementary, Supplementary
. Second 3 Boxes Down Are add up to 90 degrees, add up to 180 degrees, and are congruent.
I hope this helps :)
8/9 - 1/5
= 5(8/9)-9(1/5)
=(40/45)-(9/45)
=31/45
therefore 31/45 of the estate would go to the American cancer society
I'm guessing you're talking degrees ? It would equal 180!