Punjab State Board PSEB 6th Class Maths Book Solutions Chapter 9 Understanding Elementary Shapes Ex 9.3 Textbook Exercise Questions and Answers.

## PSEB Solutions for Class 6 Maths Chapter 9 Understanding Elementary Shapes Ex 9.3

1. Identify the shape having perpendicular lines:

Solution:

(ii), (iii), (v).

2. Identify the examples having perpendicular lines:

Question (i)

(i) Lines of railway track.

(ii) Adjacent edges of a table.

(iii) Line segment forming letter ‘L’.

Solution:

(ii) Adjacent edges of a table.

(iii) Line segment forming letter ‘L’.

3. Let \(\overrightarrow{\mathbf{AB}}\) be perpendicular to \(\overrightarrow{\mathbf{PQ}}\) and they intersect at O. What is the measure of \(\angle \mathbf{AOP}\)?

Solution:

\(\angle \mathbf{AOP}\) = 90°, because AB ⊥ PQ.

4. Line m is perpendicular to line l in the given figure. Each point on the line l is marked at equal intervals. Study the diagram and state true or false.

Question (i)

Line m is ⊥ bisector of line segment AI.

Solution:

True

Question (ii)

CE = EG

Solution:

True

Question (iii)

DF = 2DE.

Solution:

True.