1.

In the given figure, AD = 2cm, BD = 3 cm, AE = 3.5 cm and AC = 7 cm. Is DE parallel to BC ?​

Answer»

Given: AD = 2cm, DB =3cm, AB = 5cmand DE || BC Basic Proportionality theorem which STATES that. if a line is drawn parallel to one SIDE of a triangle the other two sides in distinct points, then the other two sides are divided in the same ratio. So, by basic proportionality theorem.DBAD = ECAE 32 = EC5 EC= 25×3 EC=7.5cm



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