Given: AB || DC and m2 =m24 Prove: AD BC
B
1
2
4
D
С
Statements
Reasons
1.
1
given
2
2. given
3
4
5
6
7
AB DC
m 22=m24
21 and 24 are supplements
?
mZ1+mZ2= 180°
21 and 22 are supplements
AD BC
3
same side interior angles thm.
4. def. of supplementary angles
5 substitution
6. def. of supplementary angles
7. converse same side interior angles thm.

the solution is h=10 because you add 9 to each side of the equation.

part a

in a city ice cream is mostly only bought when the temperature is very high as ice cream cools down our

so we can derive the conclusion that as the temperature increases the number of ice creams sold also increases

part b

y intercept is 5

slope is 2

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