Appollonius theorem is a theorem relating the length of …………. Of a triangle.

Apollonius Theorem is a theorem relating the length of ………..and sides of triangle. a)Altitude b)Angle bisector c)Perpendicular bisector d)Median

Theorems

Theorems

Using the Pythagoras theorem,find the length of the hypotenuse of a right-angled triangle whose sides are 40cm and 9cm.

Use Pythagoras theorem and write proof of above theorem " the lengths of tangents drawn from an external point to a circle are equal . "

Use Pythagoras theorem to write a proof of the above theorem."the lengths of tangents drawn from an external point to a circle are equal."​

Thales theorem is given by a greek mathematician. According to this theorem, if a line is drawn parallel to one side of a triangle then it divides the other two sides in the same ratio. This theorem is also known as Basic Proportionality Theorem. Here, the value of x is :

Theorem 6.7 : The sum of the angles of a triangle is 180º

Theorem 7.3 : The sides opposite to equal angles of a triangle are equal.