Question

Ajutor!
Subiectul 2!

Answer 1

Deci, 1. AE = 4 cm

2. DE = 2.4 cm

3. CD = 3.2 cm

4. AF = 4.(6) cm

5. EF = 5.(6) cm

Sper ca e bine ! Baftă!

Answer 2

1. AE=EC =>AE=AC:2

=>AE=8:2

=>AE=4cm

=>D)4cm

2. ∆EDC-dreptunghic

=>DE=EC:2

=>DE=4:2

=>DE=2cm

3. DC²=EC²-ED²

=>DC²=4²-2²

=>DC²=16-4

=>DC²=12cm

=>DC=3,5cm

B)3,5cm

4. AE=4cm=>EF=2•4=>EF=8cm

=>AF²=EF²-AE²

=>AF²=8²-4²=64-16

AF²=48cm

=>AF=6,(6)

C)6,(6)

5.EF=8cm