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# In the figure above, angle BAD = angle ABD. What is the area of triang

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Math Expert
Joined: 02 Sep 2009
Posts: 53020
In the figure above, angle BAD = angle ABD. What is the area of triang  [#permalink]

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17 Jan 2019, 23:16
00:00

Difficulty:

45% (medium)

Question Stats:

53% (01:34) correct 47% (01:32) wrong based on 37 sessions

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In the figure above, angle BAD = angle ABD. What is the area of triangle ABD?

A 30
B 60
C 72
D 102
E 144

Attachment:

2019-01-18_1114.png [ 8.64 KiB | Viewed 261 times ]

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Joined: 05 Jan 2018
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Re: In the figure above, angle BAD = angle ABD. What is the area of triang  [#permalink]

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18 Jan 2019, 03:57
In triangle BCD, side BD = 12
Hence, area = 1/2*12*12 = 72

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Re: In the figure above, angle BAD = angle ABD. What is the area of triang  [#permalink]

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18 Jan 2019, 05:45
Bunuel wrote:

In the figure above, angle BAD = angle ABD. What is the area of triangle ABD?

A 30
B 60
C 72
D 102
E 144

Attachment:
2019-01-18_1114.png

angle of triangle gives us altitude as 12
given triangle is isosceles so base = 12
0.5 * 12 * 12 = 72
IMO C
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Re: In the figure above, angle BAD = angle ABD. What is the area of triang   [#permalink] 18 Jan 2019, 05:45
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