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1a. 180-105= 75°
b. 180-82= 98°

2.a. 180-15= 165°
b. 180-98.5= 81.5°

3.a. 180- 68= 112:2= 56°
b. 180= 5b+12+26
180= 5b+ 38
180-38= 5b
142= 5b
142/5=b
28.4°= b

4. 90-25= 55°
90-89= 1°

5.a. p= 180- (26+90)= 64/2= 32°
b. ABD= 90+64= 154°
PQT= 180- (90+29)= 61°
c. 90- 61= 29°

maaf kalau ad slh :)