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Mathematics 7 Online
OpenStudy (anonymous):

If ΔTOY ≅ ΔSTU, then what corresponding side is congruent to side US? (Enter your answer using the segment letters only.)

OpenStudy (anonymous):

@jim_thompson5910

jimthompson5910 (jim_thompson5910):

hint: TO corresponds to ST since they are the first two letters of TOY and STU respectively. Because ΔTOY ≅ ΔSTU, we know by CPCTC that TO ≅ ST Note: the answer is NOT the segment TO and it is NOT the segment ST. This is just an example.

OpenStudy (anonymous):

Does YT correspond to US?

OpenStudy (anonymous):

@jim_thompson5910

jimthompson5910 (jim_thompson5910):

Good, you got it

OpenStudy (anonymous):

Thank You :) Could you tell me if i got this one correct? @jim_thompson5910

jimthompson5910 (jim_thompson5910):

which one

OpenStudy (anonymous):

If ΔABC ≅ ΔDEF, then what corresponding parts are congruent? (5 points) and and ∠ B and ∠ F ∠ E and ∠ A

OpenStudy (anonymous):

CA and DF AB and DE <- i chose that one

OpenStudy (anonymous):

?

jimthompson5910 (jim_thompson5910):

I see two possible answers that are both correct. So is it one of those things where you can "check all that apply"?

OpenStudy (anonymous):

No, I can only choose one. :\ which one do you think would be the best answer?

jimthompson5910 (jim_thompson5910):

well CA and DF are congruent (notice they are the outer letters) so are AB and DE (they are the first two letters)

OpenStudy (anonymous):

I think i'll stick to my answer since we do a lot of these in class. Thank you for your help!

jimthompson5910 (jim_thompson5910):

sure thing, i'd talk to the teacher about it

OpenStudy (anonymous):

Can you help me with this one? Δ DOG has coordinates D (3, 2), O (2, -4) and G (-1, -1). A translation maps point D to D' (2, 4). Find the coordinates of O' and G' under this translation. (5 points) O' (-1, 1);G' (1, -2) O' (3, 0);G' (-1, -1) O' (1, -2);G' (-2, 1) O' (0, -3);G' (-3, 0)

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