Question

(02.01)Line segment AB has a length of 4 units. It is translated 2 units to the right on a coordinate plane to obtain line segment A'B'. What is the length of A'B'?

1 unit
2 units
3 units
4 units

Answer 1

any ideas?

Answer 2

B?

Answer 3

think about what a translation is

we move the line right

but does the length of the line change?

Answer 4

Yes

Answer 5

if I have a piece of string that is 4 units long

and I take the string and drag it

does the string change it's length?

Answer 6

no

Answer 7

good

so the line AB, which is 4 units long, does not change it's length when moved

Answer 8

so what do you think the answer is?

Answer 9

C

Answer 10

really?

Answer 11

it is 4 units before moving

it does not change the length after moving

so, how long is it after moving?

Answer 12

oh so 4

Answer 13

good

Answer 14

Ok thanks