Fill up :

Similar triangles has ____ corresponding sides

( A ) Equal
( B ) Parallel
( C ) Perpendicular
( D ) Proportional

Two triangles are similar if their corresponding sides are ………….

Fill in the blank A triangle has ………. Sides and ……….angles.

SSS Similarity Criterion : If the corresponding sides of two triangles are proportional;then they 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.

Fill in the blanks using the correct word given in bracket: (i) All circles are______(congruent, similar) (ii) All squares are_____. (similar, congruent) (iii) All______triangles are similar, (isosceles, equilateral) (iv) Two polygons of the same number of sides are similar, if (a) their- corresponding angles are___and (b) their- corresponding sides are__(equal, proportional)

Theorem 6.3 : If in two triangles, corresponding angles are equal, then their corresponding sides are in the same ratio (or proportion) and hence the two triangles are similar.

Fill in the blanks using the correct word given in brackets: Two triangles are similar, if their corresponding angles are ...... (proportional, equal) Two triangles are similar, if their corresponding sides are ....... (proportional, equal) (iii) Two polygons of the same number of sides are similar, if (a) their corresponding angles are and (b) their corresponding sides are ........ (equal, proportional).

The ratio of the area of two similar triangle is 4:5 , the ratio of their corresponding sides are :

Criteria for similarity OF triangles || Condition OF two triangles be similar-: All angles OF both triangles equal || Ratio OF corresponding sides on equal || AAA similarity || AA similarity || SAS similarity || Examples