18. WHICH ABGLES ARE SUPPLEMTARY TO <1? WHICH ARE CONGRUENT TO <1? 19. FIND EACH ABGLE MEASURE
M<1

20. M<2

for me what is finding a good play list and going out because i can not lay down and relax so i usually go to a coffee shop. i also use the gum trick and this actually works. another advice is highlighting subjects it really does me remember certain things

step-by-step explanation:

to find the perimeter, you add up all the lengths of the sides. in this case you would have to add up 18+22+40+80 which equals 160.