*Francis of Assisi*

# Lecture - 1 Chapter 6 Triangles

**EXERCISE 6.1**

**1.** Fill in the blanks using the correct word given in brackets:

(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)

**2.** Give two different examples of pair of

(i) similar figures.

(ii) non-similar figures.

**3.** State whether the following quadrilaterals are similar or not: