Question

Can somebody check my geometry homework and help with one question I can't get? PLEASE :(

Answer 1

I disagree with you on 2 and 3

Answer 2

I just guessed on 2 I don't know what they mean

Answer 3

like what is that rule

Answer 4

For Q2, do you know what SAS is short for?

Answer 5

no what is it short fot? thats probably why i cant get it

Answer 6

In 2 they just want to you to choose which triangle can be proven by using "Side Angle Side" and that angle must be between those two sides.

Answer 7

As aroub says, you want (in both triangles) Side Angle Side in that order

Answer 8

oh so the answer would be G) because it's then angle

Answer 9

side then*

Answer 10

both triangles share the same side. so that is side. the next angle is 90 degrees, so you have the angle, then the 3rd side is marked congruent
so G is SAS

Answer 11

ok and for number 3 what did i do wrong there?

Answer 12

for Q3, you could look for SSS or SAS. which one of the choices will give you one or the other?

Answer 13

umm A), because it's SAS?

Answer 14

Are you reading what I am ? A says PN=SQ those are sides.

the picture gives you 2 sides. You need the 3rd (unmarked) sides to be =, or you need the angle between the marked sides to be equal (SAS means in that order)

Answer 15

you would need <O and <S then because those are the unmarked angles that are equal?

Answer 16

and angle O is between the 2 marked sides and S is between the 2 marked sides.

It is not angle P= angle S because P is not between the marked sides

Answer 17

oh got confused there ok so its D

Answer 18

B says ON=QR but in the picture ON is marked with 2 dashes. ON matches the 2 dashes on OS. You would want the unmarked sides to be = (NP=QR) then you could use SSS.

But the answer is D

Answer 19

ok thanks i just got confused there and for the last one is the answer H)? since its the same thing as before?

Answer 20

choice H would give you angle side angle in the first triangle
what does angle F give you? (remember, you "read" the triangle side angle side angle and so on. If a side or angle is unmarked just say ?

what does angle F give you?

Answer 21

it looks like side-angle-angle-side

Answer 22

oh i thought you said option F hold on

Answer 23

f gives you angle-side-angle

Answer 24

there are 3 sides and 3 angles. If we start with side DE, it is marked, so we can say
side
angle E is marked. so now we have side angle
side EF is not marked so we have side-angle-?
angle F is marked (per choosing option H) so side-angle-?-angle
now side FD is unmarked: side-angle-?-angle-?
finally, angle D is unmarked: side-angle-?-angle-?-?
now we need in the exact order side-angle-side
but we do not have that, because we have ? in between.

Answer 25

so to prove it we have to find ? which has to be side

Answer 26

the answer would be F) because thats side-angle-side-angle

Answer 27

that would work.
side-angle-?-angle-?-?
^
|
if we can match this side (side EF) with the other triangle, we could use side-angle-side

Answer 28

to match it with the other triangle you could flip EF and have it congruent then you would have s-a-s

Answer 29

yes, side EF matched with HI gives SAS.

Answer 30

ok got it. thanks so much>!

Answer 31

OK. I hope it is not too confusing. A little practice helps.

Answer 32

yeah definitely i just didn't know how i as suppose to read it or what sas stood for or anything so this definitely helped

Answer 33

Here is a short video that is helpful
http://www.khanacademy.org/math/geometry/triangles/v/finding-congruent-triangles