The document discusses shadows and perspective in architectural engineering. It contains diagrams showing how surfaces cast shadows on each other from different angles and perspectives. There are diagrams of simple geometric shapes like lines, angles, and points labeled with letters and numbers showing the relationships between surfaces and shadows. The document concludes by thanking Dr. Bahaa Elboshy.

1. Shadow and Perspective
Architectural Engineering
Department
First Year
Dr. Bahaa Elboshy
3rd Lecture

2. Surfaces Shadow

3. Surfaces Shadow
a,db,c
ab
d0c0
dc
a0
b0

4. a,d
b,c
a,b
c0
d0d
c,d
a0
b0c
b a
Surfaces Shadow

5. d0
c0
a0
b0
d0
a,d
b,c
a,b
dc
b a
c,d
Surfaces Shadow

6. a,db,c
d0c0
a0
b0
dc
b a
Surfaces Shadow

7. ac
a
b
d0
c0
d
c
a0
b0
b
b0
d
Surfaces Shadow

8. a
a
b
c0
c
a0
b0
bc
B0
Surfaces Shadow

9. b
ab
M0
a
M
Mb
ab
M0
a
M
‫م‬
Surfaces Shadow

10. c,d
M0
a,b
M
c
d
1
23
4
2،14،3
40
30
10
20
5
6
7
8
50
80
60
70
a0
b0
c0
d0
a
b
Surfaces Shadow

11. b
bb
a
M
M0 M0
M
Surfaces Shadow

12. Surfaces Shadow

13. THANK YOU
DR. BAHAA ELBOSHY