Triangle abc has perimeter 22cm
ab=8cm
bc=5 cm
by calculation deduce whether triangle abc is a right-angled triangle

AC = 22 - (8+5) = 22 - 13 = 9

 9^2 + 13^2 = 81 +169 = 250

 22^2 = 484

 So no, ABC is NOT a right triangle because the pythagorean thoerem fails

Hope this helps :)

r(0,90)(x,y) . t(-5,0)

last option

step-by-step explanation:

∆def to ∆d"e"f"

- rotate 90 counterclockwise degrees

- then translated 5 to the left (x --> x - 5)

answer is the last option

the answer

b. they are parallel and will never intersect.