Question

In Figure-3, AB and CD are common tangents to circles which touch each
other at D. If AB = 8 cm, then find the length of CD.
Given
17.
18.
В.
A
D
Figure-3​

Answer 1

Answer:

AB=CD

A tangent line drawn from exterior point they are always same

so

when AB=8cm

tha CD=8cm

Answer 2

Answer:

CD=4

Step-by-step explanation:

AB=8cm CD=1/2AB =1/2×8 =4cm