Question

Activity :

• Draw a D ABC.

• Bisect Ð B and name the point

of intersection of AC and the

angle bisector as D.

• Measure the sides.

AB = cm BC = cm

AD = cm DC = cm

• Find ratios AB

BC

and

AD

DC .

A

B C

D

Fig. 1.19

Given : In D ABC, bisector of ÐC interesects

seg AB in the point E.

To prove :

AE

EB

=

CA

CB

Construction : Draw a line parallel to ray CE,

passing through the point B. Extend

AC so as to intersect it at point D. A B

C

D

E

Fig. 1.20

Fig. 1.18

A

B C

P Q l

• You will find that both the ratios are almost equal.

• Bisect remaining angles of the triangle and find the ratios as above. You​

Answer 1

Answer:

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Answer 2

Answer:

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Step-by-step explanation:

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