In a triangleABC, perpendicular AD from ...

In a `triangleABC`, perpendicular AD from A on BC meets BC at D. If BD = 8 cm, DC = 2 cm and AD = 4 cm, then___

A

`triangleABC` is isosceles

B

`triangleABC` is equilaterial

C

AC = 2AB

D

`triangleABC` is right-angled at A

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