Question

URGENTE !!! Por favor me ajuda

Answer 1

48)

a) ∆ABD~∆ABC (caso AA)

$\frac{8}{4} = \frac{14}{x} \\ 2 = \frac{14}{x} \\ 2x = 14 \\ x = \frac{14}{2} = 7$

b) ∆ABD~∆ABC (caso AA)

$\frac{x}{8} = \frac{2}{x} \\ {x }^{2} = 2.8 \\ {x}^{2} = 16 \\ x = \sqrt{16} \\ x = 4$

49)

∆AEC~∆CBD

∆ABF~∆BCD

∆ABF≡∆BCD (caso LAA₀)