Respuesta :
Answer/Step-by-step explanation:
[13] is a complementary { Has a 90° angle (Box in corner)}
x = 55 ( 55-20 = 35) [55+35=90]
Answer:
12) Complementary- X=15
13) Complimentary- X=55
14) Supplementary- X=31
Step-by-step explanation:
When it's complimentary, you set it equal to 90. When its supplementary, you set it equal to 180.