ICSE Class 10  Similar Triangles Videos
Criteria for similarity of triangles
This video explains the basic criteria for similarity of triangles and understanding the Theorems related to it and solve problems.

math
 in triangle abc, AB=8 cm, AC= 10 cm and angle B is 90 degree. P and Q are points on the sides AB and AC respectively such that PQ = 2 cm and angle PQA is 90 degree. Find area of apq
 A metal beam, AB is 6 metres long. It is hinged at the top , P, of a vertical post 1 metre high. When B touched the ground as shown in figure 1. When A comes down to the ground , B rises , as shown in the figure 2. By calculating the length of AP, or otherwise , find the height of B above the ground.

Altitudes BN and CM of triangle ABC meet at age prove that
CN.HM=BM.HN
HC/HB =√[(CN.HN)/BM.HM]

In the given figure,PQ  RS  TU,PQ=5cm,TU=7.5cm,RU=a and RS=b
T.P:UTR ~PQR and then solve for a and b
 What is the length of an altitude of an equilateral triangle with side a.
 Prove that the ratio of perimeter of two similar triangles is proportional to the ratios of corresponding sides of the triangles
 In triangle ABC, angle ABC is equal to twice the angle ACB, and bisector of angle ABC meets the opposite side at point P. Show that: ¡) CB:BA=CP:PA ii) AB*BC=BP*CA

Prove.

Plz solve the sum