Q1 of 45 Page 97

What is the measure of

(i) a right angle?


(ii) a straight angle?

(i) A right angle is always of 90°


(ii) A straight angle is always of 180°


More from this chapter

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1

Match the following:































Column A



Column B



(i) Straight angle



(a) Less than one-fourth Of a revolution



(ii) Right angle



(b) More than half a Revolution



(iii) Acute angle



(c) Half of a revolution



(iv) Obtuse angle



(d) One-fourth of a Revolution



(v) Reflex angle



(e) Between and of a Revolution




(f) One complete Revolution


 2

Classify each one of the following angles as right, straight, acute, obtuse or reflex:


 2

Say True or False:

(a) The measure of an acute angle < 90°.

(b) The measure of an obtuse angle < 90°.

(c) The measure of a reflex angle > 180°.

(d) The measure of one complete revolution = 360°

(e) If m∠A = 53° and m∠B = 35°, then m∠A > m∠B.

 3

Write down the measures of

(a) some acute angles.


(b) some obtuse angles.


(Give two examples of each).