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In isosceles triangle PQR, if the measure of angle P is 80,

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SVP
SVP
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Joined: 14 Dec 2004
Posts: 1709
Followers: 1

Kudos [?]: 37 [0], given: 0

In isosceles triangle PQR, if the measure of angle P is 80, [#permalink] New post 04 Mar 2006, 11:39
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

100% (02:11) correct 0% (00:00) wrong based on 1 sessions
In isosceles triangle PQR, if the measure of angle P is 80º, which of the following could
be the measure of angle R?

I. 20º
II. 50º
III. 80º

A. I only
B. III only
C. I and II only
D. II and III only
E. I, II, and III
Intern
Intern
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Joined: 08 Jan 2006
Posts: 27
Followers: 0

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

Re: PS: Triangle [#permalink] New post 04 Mar 2006, 12:24
vivek123 wrote:
In isosceles triangle PQR, if the measure of angle P is 80º, which of the following could
be the measure of angle R?

I. 20º
II. 50º
III. 80º

A. I only
B. III only
C. I and II only
D. II and III only
E. I, II, and III


E.

Isosceles triangle 2 angles are equal. that gives us 2 possibilities:
PQR is a 80, 80, 20 triangle
PQR is a 50, 50, 80 triangle

Since we do not know if R is one of the equal angles, it can take the values 20, 50 or 80.
SVP
SVP
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Joined: 14 Dec 2004
Posts: 1709
Followers: 1

Kudos [?]: 37 [0], given: 0

 [#permalink] New post 06 Mar 2006, 08:47
OA too for "E" :-D
  [#permalink] 06 Mar 2006, 08:47
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In isosceles triangle PQR, if the measure of angle P is 80,

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