SCERT AP 7th Class Maths Solutions Pdf Chapter 4 Lines and Angles Review Exercise Questions and Answers.

AP State Syllabus 7th Class Maths Solutions 4th Lesson Lines and Angles Review Exercise

Question 1.
Observe the figure and name the points, line segments, rays and lines from the figure.
AP Board 7th Class Maths Solutions Chapter Chapter 4 Lines and Angles Review Exercise 1
Answer:
Points: A, B, C, D, E, G
Line segments : \(\overline{\mathrm{AB}}, \overline{\mathrm{AD}}, \overline{\mathrm{AE}}, \overline{\mathrm{BD}}\overline{\mathrm{DE}}, \overline{\mathrm{BC}}, \overline{\mathrm{CD}}, \overline{\mathrm{BE}}\)
Rays : \(\overrightarrow{\mathrm{BA}}, \overrightarrow{\mathrm{DA}}, \overrightarrow{\mathrm{BE}}, \overrightarrow{\mathrm{AE}}, \overrightarrow{\mathrm{EA}}, \overrightarrow{\mathrm{DE}}\)
Lines : \(\overrightarrow{\mathrm{AE}}\)

Question 2.
Observe the figure and write intersect-ing lines and concurrent lines.
AP Board 7th Class Maths Solutions Chapter Chapter 4 Lines and Angles Review Exercise 2
Answer:
Intersecting lines : l, p
Concurrent lines : l, m, n

AP Board 7th Class Maths Solutions Chapter 4 Lines and Angles Review Exercise

Question 3.
Draw a line segment PQ = 6.3 cm.
Answer:
AP Board 7th Class Maths Solutions Chapter Chapter 4 Lines and Angles Review Exercise 3

Question 4.
Name any three possible angles in the adjacent figure.
AP Board 7th Class Maths Solutions Chapter Chapter 4 Lines and Angles Review Exercise 4
Answer:
Angles: ∠POQ, ∠POR, ∠POS, ∠OOS, ∠ROS, ∠QOR.

Question 5.
Write the type of angles you observed in the given clock.
AP Board 7th Class Maths Solutions Chapter Chapter 4 Lines and Angles Review Exercise 5
Answer:
Angles (i) Acute angle
(ii) Right angle
(iii) Obtuse angle
(iv) Straight angle
(v) Reflex angle.

Question 6.
One right angle is equal to __________ degrees.
Answer:
90.

Question 7.
Write any two acute angles and any two obtuse angles.
Answer:
Acute angles :
AP Board 7th Class Maths Solutions Chapter Chapter 4 Lines and Angles Review Exercise 6
Obtuse Angles:
AP Board 7th Class Maths Solutions Chapter Chapter 4 Lines and Angles Review Exercise 7

AP Board 7th Class Maths Solutions Chapter 4 Lines and Angles Review Exercise

Question 8.
Observe the parallel and perpendicular lines in the given figure. Write them using symbols ∥, ⊥
Answer:
AP Board 7th Class Maths Solutions Chapter Chapter 4 Lines and Angles Review Exercise 8
Answer:
From the given figure.
Parallel lines : l ∥ m.
Perpendicular lines : l ⊥ n and m ⊥ n.

Question 9.
Measure and write angle ∠AOB with the help of protractor.
AP Board 7th Class Maths Solutions Chapter Chapter 4 Lines and Angles Review Exercise 9
Answer:
∠AOB = 40°.

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