Why it is called valentine day

Arrange the events in graphic design history in chronological order. william morris commercialized graphic design.

Achair of height 1 m is placed 1 m in front of a plane mirror. a girl is standing 3 m behind the chairas shown. find the minimum length of the plane mirror in order that she can see the whole imageof the chair. a. 0.50 mb. 0.75 mc. 0.80 md. 1.00 m

Which artistic creation was in spreading design ideas throughout the islamic world? a. calligraphy b. ceramics c. rugs