Question

Determine the perimeter of ABCD.

5

28

18

10

Answer 1

find the lengths of any 2 adjacent sides

Answer 2

say AB and BC
then perimeter = 2 (AB+BC)

Answer 3

so u know how will u get AB ?

Answer 4

start by finding co-ordinates of A and B :)

Answer 5

A = (-5,3)
B = (-4,3)
C = (4,2)
D = (-5,2)

Answer 6

sorry B = (4,3)

Answer 7

yes, good!

so AB would just be |4-(-5)|
right ?

Answer 8

did u get how i got
|4-(-5)|
?

Answer 9

yes then it would be 9

Answer 10

if not,
use standard distance formula :)

and yes, 9 is correct :)

Answer 11

and BC?
you can find that ?

Answer 12

actually C is 4,-2

Answer 13

B = (4,3)
C = (4,-2)

BC = |...| = .. ?

Answer 14

yea i know i forgot the negative

Answer 15

\[\left| 4-4 \right|\]

Answer 16

BC is vertical
so it'll be difference in "y co-ordinates"
|3- (-2)|

Answer 17

oh ok so it would be 5

Answer 18

correct!
and perimieter ?
\(2(9+5)= \)

Answer 19

28

Answer 20

\(\huge \checkmark \)

Answer 21

thanks so much :)

Answer 22

welcome ^_^