Question

.l
In the figure, <A=60o , AB = AC = 5.8cm. Find:

(i) <B

(ii) length of BC
​

Answer 1

<B=60

bc=5.8cm

according to the isosceles triangle property base angles are equal so <b=<a therefore making <c=60 as well according to the angle sum property suggesting that this is an equilateral triangle therefore bc also equals to 5.8cm.