. Which of the following are correct concrete models of a plane?
a.ceiling of a room, desktop and a needle
b · ceiling of a room, desktop and a hair strand ·
c. ceiling of a room,desktop and an electric wire
d.ceiling of a room,desktop and a pictu’re frame
Question;
Which of the following are correct concrete models of a plane?
Answer:
D. Ceiling of a room, desktop and a picture frame
