- Aparallel to BC
- Bperpendicular to BC
- Cequal to BC
- Dtwice BC
Step-by-Step Solution
Equal-area triangles on the same base and on the same side of it lie between the same parallels, so AD is parallel to BC (converse theorem).
Answer: A) parallel to BC
Two triangles ABC and DBC stand on the same base BC, with A and D on the same side. If ar(ABC) = ar(DBC), then AD is:
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