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Special Numbers and Triangle Geometry Quiz
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In a triangle ABC, a line is drawn parallel to BC, which cuts AB at D and AC at E. The ratio of AD:AB is equal to 3:5. What is the ratio of DE:BC?
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A
3:5
💡 Explanation:
By Basic Proportionality Theorem (Thales theorem), if DE is parallel to BC, then AD/AB = AE/AC = DE/BC. Given AD:AB = 3:5, therefore DE:BC = 3:5.