Q59 of 78 Page 23

In Fig. 2.37,

(a) name any four angles that appear to be acute angles.


(b) name any two angles that appear to be obtuse angles.


(a) The four angles that appear to be acute angles are ∠ AEB, ∠ ADE, ∠ BAE and ∠ BCE.


(b) ∠ BCD and ∠ BAD are angles that appear to be obtuse angles.


More from this chapter

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57

What is common in the following figures (i) and (ii) (Fig. 2.36.)?


Is Fig. 2.36 (i) that of triangle? if not, why?

 58

If two rays intersect, will their point of intersection be the vertex ofan angle of which the rays are the two sides?

 60

In Fig. 2.38,

(a) is AC + CB = AB?


(b) is AB + AC = CB?


(c) is AB + BC = CA?


 61

In Fig. 2.39.


(a) What is AE + EC?


(b) What is AC – EC?


(c) What is BD – BE?


(d) What is BD – DE?