State the two properties which are encessary for given two triangle to be similar.

Two triangle are called similar if

State two characteristic properties of nuclear forces.

SAS Similarity Criterion: If in two triangle; one pair of corresponding sides are proportional and the included angles are equal then two triangles are similar.

Similarity of Two Triangles

State two properties and two uses of gamma rays.

In the given figure (not drawn to scale) three trianges are shown. Which of the two triangles are similar ?

Is it true to say that, if in two triangles, an angle of one triangle is equal to an angle of another triangle and two sides of one triangle are proportional to the two sides of the other triangle, then the triangles are similar? Give reason for your answer.

If two angles of one triangle are respectively equal to two angles of another triangle; then two triangles are similar.

Write the truth value (T/F) of each of the following statements: Two polygons are similar if their corresponding angles are proportional. Two triangles are similar if their corresponding sides are proportional.(iii) Two triangles are similar if their corresponding angles are proportional.