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anonymous
 one year ago
What is the measure of ∠TVU, and why?
A.y, because Triangle RST is similar to triangle VUT
B.y over 2, because Triangle RST is congruent to triangle VUT
C.y + 55 degrees, because Triangle RST is similar to triangle TUV
D.125 degrees − y, because Triangle RST is congruent to triangle TUV
anonymous
 one year ago
What is the measure of ∠TVU, and why? A.y, because Triangle RST is similar to triangle VUT B.y over 2, because Triangle RST is congruent to triangle VUT C.y + 55 degrees, because Triangle RST is similar to triangle TUV D.125 degrees − y, because Triangle RST is congruent to triangle TUV

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phi
 one year ago
Best ResponseYou've already chosen the best response.1do you know about "vertical angles" ?

phi
 one year ago
Best ResponseYou've already chosen the best response.1vertical angles are equal dw:1433277907556:dw

phi
 one year ago
Best ResponseYou've already chosen the best response.1if you use that info with your picture dw:1433277964853:dw

phi
 one year ago
Best ResponseYou've already chosen the best response.1the sum of the 3 angles in a triangle add up to ?

phi
 one year ago
Best ResponseYou've already chosen the best response.1they add up to 180. if 2 angles in a triangle match 2 angles in another triangle, the 3rd angles must also match (because it's the number that makes the other two add up to 180)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0do I add 55+55 cause a normal triangle should add up to 90

phi
 one year ago
Best ResponseYou've already chosen the best response.1call the "vertical angle" x (some unknown number) in the left triangle you have 55+x+y = 180 (they have to add up to 180) in the right triangle you have 55+x + ? = 180 what must the ? be? it must be y

phi
 one year ago
Best ResponseYou've already chosen the best response.1the point is if 2 angles are congruent, then the third angle is also. if 3 angles are congruent, the triangles are similar

phi
 one year ago
Best ResponseYou've already chosen the best response.1angle TVU is the unmarked angle in the bottom right triangle. the 2 triangles are similar and that means the 3 angles in one triangle are exactly equal to the corresponding angles in the other triangle. Follow ?
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