Question

Which of the following is common to both ADC and BCD?

Answer 1

Do you mean which side is common to both triangles?

Answer 2

A. <D
B. <C
D. ED
D. DC

Answer 3

Can you name the sides of triangle ADC?

Answer 4

thats all the picture says

Answer 5

Below is the figure you have, but I bolded in black triangle ADC.
What are the sides of triangle ADC?

Answer 6

what do you mean the sides

Answer 7

See the figure below.
Here is a triangle.
A triangle is a polygon with three vertices and three sides.
The vertices of a triangle are points. Points are named with a single capital letter.
Below is a picture showing triangle ABC. The sides of a triangle are line segments.
The sides of triangle ABC are segment AB, segment BC, and segment AC.