in triangle DE parallel BC ,Ad=2.5 ,DB=5,BC =1 5cm find DE and all angles of the triangle
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Answer:
DE=5cm
Step-by-step explanation:
As DE parallel to BC:
AD/AB=DE/BC
2.5/2.5+5=DE/15
2.5/7.5=DE/15
1/3=DE/15
3DE=15
DE=15/3
DE=5cm
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