Q64 of 78 Page 23

An angle is said to be trisected, if it is divided into three equal parts. If in Fig. 2.42, ∠BAC = ∠CAD = ∠DAE, how many trisectors are there for ∠BAE?

Trisectors are the lines which trisect an angle (or which divide an angle into 3 equal parts).


So, here we have two trisectors for ∠ BAE: AC and AD.


More from this chapter

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62

Using the information given, name the right angles in each part of Fig. 2.40:

(a) BA ⊥BD


(b) RT ⊥ST


(c) AC ⊥BD


(d) RS ⊥RW


(e) AC ⊥BD


(f) AE ⊥CE


(g) AC ⊥CD


(h) OP ⊥AB


Fig. 2.40

 63

What conclusion can be drawn from each part of Fig. 2.41, if

(a) DB is the bisector of ∠ADC?



(b) BD bisects ∠ABC?



(c) DC is the bisector of ∠ADB, CA ⊥ DA and CB ⊥ DB?


 65

How many points are marked in Fig. 2.43?

 66

How many line segments are there in Fig. 2.43?