Triangle

Equilateral triangles I,Ill and IV are such that the altitude of triangle I is the side of triangle II,the altitude of triangle II is the side of triangle and the altitude of the triangle is the side of triangle IV.If the area of triangle I is 2cm^(2), then the area (incm ) of triangle IV is:

If Delta_(1) is the area of the triangle formed by the centroid and two vertices of a triangle Delta_(2) is the area of the triangle formed by the mid- point of the sides of the same triangle, then Delta_(1):Delta_(2) =

What can be said about the spontaneity of reactions when (1) triangle H and triangle S both positive (2) triangle H and triangle S are both negative (3) triangle H is positive and triangle S (4) triangle H is negative and triangle S is positive ?

Without drawing the triangles write all six pairs of equal measures in each of the following pairs of congruent triangles. (i) Delta STU approx Delta DEF (ii) Delta ABC approx Delta LMN (iii) Delta YZX approx PQR (iv) Delta XYZ approx Delta MLN

Consider the following statements : 1. The orthocentre of a triangle always lies inside the triangle. 2. The centroid of a triangle always lies inside the triangle. 3. The orthocentre of a right angled triangle lies on the triangle. 4.The centroid of a right angled triangle lies on the triangle. Which of the above statements are correct ?

In Delta PQR~=Delta EFD, Which side of Delta PQR equals ED? Which angle of Delta PQR equals /_E?

In the figure, DEFG is a square and angle BAC = 90^(@). Prove that (A) Delta AGF ~ Delta DBG (B) Delta AGF ~ Delta EFC (C) Delta DBG ~ Delta EFC