1. ‫הדגמת הוכחת משפט‬
‫פיתגורס‬

4. a b
a
b
b
a
b a

5. S ABCD = (a + b) = a + 2ab + b
2 2 2
a b
a
b
b
a
b a

7. a b
a
b
b
a
b a

8. a b
a
b
b
a
b a

9. a b
c a
b c
b
c
a c
b a

10. a ⋅b
S ABCD = 4⋅ + c 2 = 2ab + c 2
2
a b
c a
b c
b
c
a c
b a

11. a ⋅b
S ABCD = (a + b) = a + 2ab + b
2 2 2
S ABCD = 4⋅ + c 2 = 2ab + c 2
2
a + 2ab + b = 2ab + c
2 2 2
a + 2ab + b = 2ab + c
2 2 2
a +b2 2
=c 2