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Among all isosceles triangles RST having the measure of angle S equal

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Among all isosceles triangles RST having the measure of angle S equal [#permalink]

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New post 24 Aug 2017, 23:39
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Among all isosceles triangles RST having the measure of angle S equal to 40°, what is the largest possible measure for angle R?

(A) 40°
(B) 70°
(C) 90°
(D) 100°
(E) It cannot be determined from the information given
[Reveal] Spoiler: OA

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Re: Among all isosceles triangles RST having the measure of angle S equal [#permalink]

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New post 25 Aug 2017, 00:11
Bunuel wrote:
Among all isosceles triangles RST having the measure of angle S equal to 40°, what is the largest possible measure for angle R?

(A) 40°
(B) 70°
(C) 90°
(D) 100°
(E) It cannot be determined from the information given


Largest possible measure would be 100 if S and T are equal to 40
D
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Kudos [?]: 162 [0], given: 134

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Among all isosceles triangles RST having the measure of angle S equal [#permalink]

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New post 27 Aug 2017, 08:04
Luckisnoexcuse wrote:
Bunuel wrote:
Among all isosceles triangles RST having the measure of angle S equal to 40°, what is the largest possible measure for angle R?

(A) 40°
(B) 70°
(C) 90°
(D) 100°
(E) It cannot be determined from the information given


Largest possible measure would be 100 if S and T are equal to 40
D



E for me.
How do you know S=T?
Please help

Kudos [?]: 0 [0], given: 29

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Kudos [?]: 162 [0], given: 134

GMAT 1: 630 Q47 V29
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Re: Among all isosceles triangles RST having the measure of angle S equal [#permalink]

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New post 27 Aug 2017, 08:09
HarpreetSinghBajwa wrote:
Luckisnoexcuse wrote:
Bunuel wrote:
Among all isosceles triangles RST having the measure of angle S equal to 40°, what is the largest possible measure for angle R?

(A) 40°
(B) 70°
(C) 90°
(D) 100°
(E) It cannot be determined from the information given


Largest possible measure would be 100 if S and T are equal to 40
D



E for me.
How do you know S=T?
Please help

Largest possible angle for R will only happen when S=T=40
In other two cases
R will be 40


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Re: Among all isosceles triangles RST having the measure of angle S equal [#permalink]

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New post 29 Aug 2017, 17:35
Bunuel wrote:
Among all isosceles triangles RST having the measure of angle S equal to 40°, what is the largest possible measure for angle R?

(A) 40°
(B) 70°
(C) 90°
(D) 100°
(E) It cannot be determined from the information given


Since angle S is 40 degrees, angle T could also be 40 degrees, making angle R, at maximum, 100 degrees.

Answer: D
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Kudos [?]: 940 [0], given: 3

Re: Among all isosceles triangles RST having the measure of angle S equal   [#permalink] 29 Aug 2017, 17:35
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