Answer:
I'm pretty sure it's A. It will help you get your equations set up correctly
Step-by-step explanation:
For anyone needing this answer in the future lol
Answer:
∠a=40°
Step-by-step explanation:
complement of angle a=90-a
supplement of angle a=180-a
90-a=1/2(180-a)-20
multiply by 2
180-2a=180-a-40
180-180+40=-a+2a
a=40
I think its shear, because that is the only one in which the shape actually changes shape and size
