Answer:
Addition and subtraction are inverse operations. Start with 7, then add 3 we get 10, now subtract 3 and we get back to 7.
Another Example: Multiplication and division are inverse operations. Start with 6, multiply by 2 we get 12, now divide by 2 and we get back to 6.
C is the midpoint of AB
Whereas D is the midpoint of AC
So AD + DC =CB is true
AD + DC = AC is true
and AD+DC+CB=AB is true
Therefore all statements apart from A are true.
I hope you understand.
Good luck
I think that it is a a rotation and a slide. Again i think not 100% sure but i think so.
The answer would be the first one because the angle measurement of a straight line is 180°