CBSE Class 10  Basic Proportionality Theorem Videos
Application of Basic proportionality theorem
This video explains the concept of an isosceles triangle and Basic Proportionality Theorem.

give answer

Answer of the question given below
 Two angles of a triangle are 70° and 80° The vertices of the triangle are on a circle of radius 3.5cm construct the triangle.

question

Using Basic Proportionality Theorem, prove that a line drawn through the midpoint of one side of a triangle parallel to another side bisects the third side. [NCERT]
 what is Thales therom
 in the figure, if de parallel bc and ad = 4x 3 ae = 8x 7 , bd = 3x 1 and ce = 5x 2fi x.d
 In the figure of ∆ABC ,DC AB. If AD = 2x ,DC = X +3, BC = 2x1 and CE =X, then find the value of X.
 In three line segments OA, OB and OC,points L,M,Nrespectively are so shosen that LM ll AB and MN ll BC but neither of L, M nor of A,B,C are collinear. Show that LN ll AC.
 E and F are points on the sides PQ and PR respectively of a _{}PQR. State whether EF  QR. PE = 3.9cm, EQ = 3cm, PF =3.6cm and FR = 2.4cm.