Question

ABC is an isosceles triangle with AB= AC and AD is one of its altitude.

i) State the three pairs of equal parts in ∆ADB and ∆ADC.

ii) Is ∆ADB≅ ∆ADC ? Why or why not ?

iii) Is ∠B = ∠ C? Why or why not ?

iv) Is BD = CD ? Why or why not ?

​

Answer 1

Answer:

It is given that two circle having radii 5.5 cm and 4.2 cm touch each other externally. We know, the distance between the centres of the circles touching externally is equal to the sum of their radii. Thus, the distance between their centres is 9.7 cm.