" (b) In "Delta PQR,PQ" and "PR" are altitudes of the triangle."

Draw rough sketches for the following: In triangle PQR ,PQ and PR are altitude of the triangle.

Triangle ABC is similar to triangle PQR. If AD and PM are altitudes of the two triangles, prove that : (AB)/(PQ) = (AD)/(PM)

In a triangle PQR, the side QR is extended to S to form the exteiror angle PRS of measure 120^(@) . If the sides PQ and PR are equal, then prove that the triangle PQR is an equilateral triangle.

In the figure, in Delta PQR and Delta TQR, PQ = TR and PR = TQ . Which of the following statements is true?

Delta PQR is isosceles triangle with PQ = PR. If ltQ = 70^(@) , then the other angles of the triangle.

Solve the following examples. In Delta PQR : PQ = sqrt8 , QR = sqrt5 , PR sqrt3 . " Is " Delta PQR a right angled triangle? If yes , which angle is of 90 ^(@) ?

Delta PQR is an isosceles triangle with PQ = PR . If angle Q = 70^(@) , then find the other angles of the triangle.

18.If in triangle PQR,PR 25cm,PQ24cm and RR7cm. What type of triangle is PQR

In triangle PQR , PQ =10 cm , QR =12 , PR =8 cm . Find out the greatest and the smallest angle of the triangle .

Sides AB and AC and median AD of a triangle ABC are respectively proportional to sides PQ and PR and median PM of another triangle PQR. Prove that Delta ABC~ Detla PQR