Question

MADALINA IORGA:
18 P SI COROANA!!!!!!!!!!

Answer 1

AC=11+1=12

luam perpendiculara BD din B

BD=4

AD=3

AB²=BD²+AD²

AB²=16+9=25

AB=5

AC= 12 u ; AB=5 u

Answer 2

Răspuns:

A(-1,0)

B(2,4)

C(11,0)

AB=

$\sqrt{( - 1 - 2) ^{2} + {(0 - 4)}^{2} } = \sqrt{9 + 16} = \sqrt{25} = 5$

AC=

$\sqrt{ {( - 1 - 11)}^{2} + {(0 - 0)}^{2} } = \sqrt{ {12}^{2} } = 12$