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giuliab3
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11 Aug 2017, 19:06
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If AD is 6, and ADC is a right angle, what is the area of triangular region ABC?
(1) Angle ABD = 60°
(2) AC = 12
After getting this question wrong (above), I realized I still do not distinguish what conditions are SUFFICIENT for assuming that a triangle is a 30-60-90 triangle and what conditions show that the triangle COULD be a 30-60-90 but I cannot assume it based on the information given.
So what conditions are sufficient for me to assume a triangle is indeed a specific type of triangle?
Thank you!
(1) Angle ABD = 60°
(2) AC = 12
After getting this question wrong (above), I realized I still do not distinguish what conditions are SUFFICIENT for assuming that a triangle is a 30-60-90 triangle and what conditions show that the triangle COULD be a 30-60-90 but I cannot assume it based on the information given.
So what conditions are sufficient for me to assume a triangle is indeed a specific type of triangle?
Thank you!
Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Data Sufficiency (DS) Forum
Still interested in this question? Check out the "Best Topics" block below for a better discussion on this exact question, as well as several more related questions.
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11 Aug 2017, 21:15
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giuliab3
If AD is 6, and ADC is a right angle, what is the area of triangular region ABC?
(1) Angle ABD = 60°
(2) AC = 12
After getting this question wrong (above), I realized I still do not distinguish what conditions are SUFFICIENT for assuming that a triangle is a 30-60-90 triangle and what conditions show that the triangle COULD be a 30-60-90 but I cannot assume it based on the information given.
So what conditions are sufficient for me to assume a triangle is indeed a specific type of triangle?
Thank you!
(1) Angle ABD = 60°
(2) AC = 12
After getting this question wrong (above), I realized I still do not distinguish what conditions are SUFFICIENT for assuming that a triangle is a 30-60-90 triangle and what conditions show that the triangle COULD be a 30-60-90 but I cannot assume it based on the information given.
So what conditions are sufficient for me to assume a triangle is indeed a specific type of triangle?
Thank you!
Does the question specify where B is located with respect to ADC?
giuliab3
Joined: 24 Jun 2017
Last visit: 17 Feb 2019
Posts: 27
Own Kudos:
Given Kudos: 207
Location: Singapore
Schools: INSEAD Jan '19
GMAT 1: 660 Q46 V34
GPA: 3.83
11 Aug 2017, 22:14
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HanoiGMATtutor
giuliab3
If AD is 6, and ADC is a right angle, what is the area of triangular region ABC?
(1) Angle ABD = 60°
(2) AC = 12
After getting this question wrong (above), I realized I still do not distinguish what conditions are SUFFICIENT for assuming that a triangle is a 30-60-90 triangle and what conditions show that the triangle COULD be a 30-60-90 but I cannot assume it based on the information given.
So what conditions are sufficient for me to assume a triangle is indeed a specific type of triangle?
Thank you!
(1) Angle ABD = 60°
(2) AC = 12
After getting this question wrong (above), I realized I still do not distinguish what conditions are SUFFICIENT for assuming that a triangle is a 30-60-90 triangle and what conditions show that the triangle COULD be a 30-60-90 but I cannot assume it based on the information given.
So what conditions are sufficient for me to assume a triangle is indeed a specific type of triangle?
Thank you!
Does the question specify where B is located with respect to ADC?
It´s the problem discussed in this link: https://gmatclub.com/forum/if-ad-is-6-a ... 01200.html
