Nce
practice
4-6. find the remaining side 1
polygon abcdef. then find
perimeter
1. length of bc
ning side lengths of
and the polygon's
fluency pra
hidden clue
2. length of cd
3. length of de
4. length of of
for each ordered pair, simplify the two coordinates. then
locate and label the corresponding point on the graph draw
line segments to connect the points in alphabetical order
use the completed picture to answer the riddle below.
i can.
add and
decima
5. length of fa
6. perimeter of abc
vi
what and on
you carry in
i
5) and t12.-1
in 7 and 8. polygon qrst has vers
o(-4, -1). r(-4,5). s[2,5). and
7. draw and label polygon orst on the
coordinate plane
n w
e
6
oo
in in
-4
-2
w
in
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14
(12.4-6.45, 0.80
a (6.4 +0.92, 15.74 -2.64)
8. construct an argument to justify whether
or not polygon qrst is a square
k (5.94 + 1.36, 2.78
b (9.65 +0.4. 16.058 -1.2)

3. parallelogram

step-by-step explanation:

we turn each of our sides into direction vectors

ab=b-a=(3 - 7, 1 - 0) = (-4, 1)

bc=c-b=(1,6)

cd=d-c=(4,-1)

da=a-d=(-1,-6)

we see how the opposite sides have negated direction vectors; this is characteristic of a parallelogram.   we have congruent sides ab=cd and bc=da with unequal lengths because 1^2+6^2 is different from (-4)^2+1^2.   so it's not a square or a rhombus.  

we check the dot product of direction vectors of adjacent sides.   we have

ab dot bc = -4(1) + 1(6) = 2

that's not zero so the sides are not perpendicular.   we've ruled out rectangle.

the direction vectors indicate two pairs of congruent parallel sides, so we choose parallelogram over trapezoid.

step-by-step explanation:

the inequality is:

250c+180g≥950

step-by-step explanation:

let c denotes the number of days in a week   miyoko worked as a cryptographer.

and g denotes the number of days in a week she works as a geologist.

now we are given that she earns $250 for every day she works as a cryptographer,and earns $180 for every day she works as a geologist.

now miyoko's goal is to earn more than $950 this week.

hence, the inequality could be represented as:

250c+180g≥950