Question

Triangles DEF and D'E'F' are shown on the coordinate plane below.

Answer 1

What rotation was applied to triangle DEF to create triangle D'E'F'?

Answer 2

Select one:
a. 90° counterclockwise
b. 90° clockwise
c. none of the above
d. 180°

Answer 3

@ganeshie8

Answer 4

forget about formilas,
just have a look at both triangles.

Answer 5

look at the triangles from origin (0, 0)

Answer 6

how much angle u need to rotate triangle ABC, to get to triangle A'B'C' ?

Answer 7

idk im confused

Answer 8

@ganeshie8

Answer 9

imagine first triangle is ur head
and second triangle is ur left hand

Answer 10

ok