Question

Calcule x e y, sabendo que os ângulos com “marcas iguais" são congruentes.​

Answer 1

Resposta:

A)

4---3

x---9

x=4×9/3

x=36/3

x=12

4---3

8---y

y=8×3/4

y=24/4

y=6

B)

x²=9²+12²

x²=225

x=

$\sqrt{225}$

x=15

5²=3²+y²

25=9+y²

25-9=y²

16=y²

y=

$\sqrt{16}$

y=4

C)

2---10

y---15

y=2×15/10

y=30/10

y=3

2---10

4---x

x=10×4/2

x=40/2

x=20