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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!
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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!
Show more
Does the question specify where B is located with respect to ADC?
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!
Does the question specify where B is located with respect to ADC?
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!
Does the question specify where B is located with respect to ADC?
Got it. A triangle is defined when you know two angles and the side in between, two sides and the angle in between, or all 3 sides. Obviously, when you know two angles, you also know the third one, and in a right triangle, once you know two sides, you also know the third one. See you if these hints help you make sense of the problem.
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?
Still interested in this question? Check out the "Best Topics" block above for a better discussion on this exact question, as well as several more related questions.