What is the difference between an inequality and an equation?

Step-by-step explanation: Both sides are equal in an equation; however, in an inequality one side is greater than the other.

So an equation is a mathematical sentence

that contains an equals signs.

An inequality is a mathematical sentence which

states two expression are not equal.

okay wait before i answer, is this for your points on a graph?

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer