In triangle ABC, a perpendicular line is drawn from the vertex A to a point D on BC. If BC = 9 cm and DC = 3 cm, then what is the ratio of the areas of triangle ABD and triangle ADC respectively?

In triangle ABC, a perpendicular line is drawn from the vertex A to a

1.	In triangle ABC, a perpendicular line is drawn from the vertex A to a point D on BC. If BC = 9 cm and DC = 3 cm, then what is the ratio of the areas of triangle ABD and triangle ADC respectively?
A.	1 : 1
B.	2 : 1
C.	3 : 1
D.	4 : 1
Answer» C. 3 : 1

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In triangle ABC, a perpendicular line is drawn from the vertex A to a point D on BC. If BC = 9 cm and DC = 3 cm, then what is the ratio of the areas of triangle ABD and triangle ADC respectively?

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