bcimaria
Answered

SOMEONE PLZ HELP PLZ

The vertices of triangle IJK have coordinates I(−5, −2), J(−5, −4), and K(−4, −4).


Which coordinates are the coordinates of the vertices of triangle IꞌJꞌKꞌ when triangle IJK is rotated 180° clockwise around the origin?




A.

Iꞌ(5, 2), Jꞌ(5, 4), Kꞌ(4, 4)


B.

Iꞌ(−2, 5), Jꞌ(−4, 5), Kꞌ(−4, 4)


C.

Iꞌ(2, −5), Jꞌ(4, −5), Kꞌ(4, −4)


D.

Iꞌ(−5, 2), Jꞌ(−5, 4), Kꞌ(−4, 4)

Verified Answer :

RedRicin

Any point (x, y) rotated 90° CW about (0, 0) ⇒ (y, -x)
Any point (x, y) rotated 180° about (0, 0) ⇒ (-x, -y)
Any point (x, y) rotated 90° CCW about (0, 0) ⇒ (x, -y)

I(−5, −2)  rotated 180° about (0, 0) ⇒ (5, 2)
J(−5, −4)  rotated 180° about (0, 0) ⇒ (5, 4)
K(−4, −4)  rotated 180° about (0, 0) ⇒ (4, 4)

The correct answer is A.

Related Questions