GSEB Class 6 Maths Solutions Chapter 5 પાયાના આકારોની સમજૂતી Exercise 5.3

Question 1. નીચેનાં જોડકાં જોડોઃ

Answer:
(i) સરળકોણ → (c) આંટાના અડધા (Straight angle → half of a turn)
(ii) કાટખૂણો → (d) આંટાનો \( \frac{1}{4} \) ભાગ (Right angle → one-quarter part of a turn)
(iii) લઘુકોણ → (a) આંટાના \( \frac{1}{4} \) ભાગથી નાનો (Acute angle → smaller than one-quarter part of a turn)
(iv) ગુરુકોણ → (e) આંટાના \( \frac{1}{4} \) અને \( \frac{1}{2} \) તે ભાગની વચ્ચે (Obtuse angle → between one-quarter and one-half part of a turn)
(v) પ્રતિબિંબકોણ → (b) આંટાના અડધાથી વધારે (Reflex angle → more than half of a turn)
In simple words: This question requires us to pair different kinds of angles with the part of a whole spin they show. A straight angle equals half a turn. A right angle is a fourth part of a turn. An acute angle is smaller than a quarter turn. An obtuse angle lies between a quarter and half a turn. A reflex angle means more than half a turn.

Exam Tip: Remember the definitions of different angles by relating them to fractions of a full rotation. This method helps to understand their size and classification easily.

Question 2. નીચે દર્શાવેલ ખૂણાઓનું કાટખૂણો, લઘુકોણ, ગુરુકોણ, સરળકોણ અને પ્રતિબિંબકોણમાં વર્ગીકરણ કરોઃ
Answer:
(a) This is an acute angle; its size is smaller than a right angle.
(b) This is an obtuse angle; its size is larger than a right angle.
(c) This represents a right angle.
(d) This is a reflex angle; its size is greater than a straight angle.
(e) This is a straight angle; its size equals two right angles.
(f) This is an acute angle; the sizes of both provided angles are less than a right angle.
In simple words: We must classify the angles into their proper categories. An acute angle is tiny, less than 90 degrees. An obtuse angle measures more than 90 but below 180 degrees. A right angle is precisely 90 degrees. A straight angle measures 180 degrees. A reflex angle is greater than 180 degrees.

Exam Tip: To classify angles correctly, always compare their size to a right angle (90°) and a straight angle (180°). Visualizing these key angles helps a lot.