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In an isosceles triangle PQR, if the measure of angle P is 80 , which
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10 Jan 2024, 00:14
10 Jan 2024, 00:14
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In an isosceles triangle PQR, if the measure of angle P is 80°, which of the following could be the measure of angle R ?
I. 20°
II. 50°
III. 80°
(A) Only I
(B) Only III
(C) Only I and II
(D) Only II and III
(E) I, II and III
I. 20°
II. 50°
III. 80°
(A) Only I
(B) Only III
(C) Only I and II
(D) Only II and III
(E) I, II and III
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GRE Geometry Formulas
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In an isosceles triangle PQR, if the measure of angle P is 80 , which
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11 Jan 2024, 21:54
11 Jan 2024, 21:54
1
Since we're given P = 80:
80 + q + r = 180
In an isosceles triangle, 2 of the angles must be equal.
If p = q --> 80 + 80 + r = 180 --> r = 20
If r = q --> 80 + 2r = 180 --> r = 50
If p = r --> r = 80
80 + q + r = 180
In an isosceles triangle, 2 of the angles must be equal.
If p = q --> 80 + 80 + r = 180 --> r = 20
If r = q --> 80 + 2r = 180 --> r = 50
If p = r --> r = 80
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2.png [ 9.29 KiB | Viewed 662 times ]
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General Discussion
Re: In an isosceles triangle PQR, if the measure of angle P is 80 , which
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14 Jan 2024, 23:18
14 Jan 2024, 23:18
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