Fill in the blanks:
Q (i) Two line segments are congruent if they have….........
(ii) Two angles are congruent if they have...........
(iii) Two squares are congruent if they have............
(iv) Two circles are congruent if they have...........
(v) Two rectangles are congruent if they have..........
(vi) Two triangles are congruent if they have..........

Answer

Let's solve the question step by step.

### Solution:

**(i)** Two line segments are congruent if they have **the same length**.
- Explanation: Congruent line segments are those that are equal in length.

**(ii)** Two angles are congruent if they have **the same measure**.
- Explanation: Congruent angles are those that have equal degrees or radians.

**(iii)** Two squares are congruent if they have **the same side length**.
- Explanation: Congruent squares must have equal lengths for all their sides.

**(iv)** Two circles are congruent if they have **the same radius**.
- Explanation: Congruent circles are those that have equal distances from their centers to their circumferences.

**(v)** Two rectangles are congruent if they have **the same length and breadth**.
- Explanation: Congruent rectangles must have equal dimensions for both length and width.

**(vi)** Two triangles are congruent if they have **all equal parts** (sides and angles).
- Explanation: Congruent triangles must have equal lengths for all corresponding sides and equal measures for all corresponding angles.

### Summary of Answers:
- (i) the same length
- (ii) the same measure
- (iii) the same side length
- (iv) the same radius
- (v) the same length and breadth
- (vi) all equal parts