I don't understand these questions, could someone please help??

1. 1. c=75 b=105 d=105

1. 2. b=104 a=76 c=76

2. 1. c=62 b=118 d=118

2. 2. d= 120 a=60 c=60

4. 1. a= 90 b= 45

4. 2. c=90 b=15

I do not know the last one.

Step-by-step explanation:

You do the first four equations by knowing that the number that you do know across from it is going to be the same. Then you add them and subtract it from 360 and multiply that number by 2 and get the number for the other spots.

Four the 4 questions, you know that the box in the conure means that it is 90, so whatever other number you know plus 90 minces 180 is the number for b.

you need more information to answer this question

step-by-step explanation: