Question

Rotate the triangle 180° counterclockwisearound the origin and enter the newcoordinatesCOULDEnter thenumber thatbelongs in the

Answer 1

A rotation of 180° counterclockwise is given by the rule:

`(x,y)\rightarrow(-x,-y)`

Then, since the coordinates of A are (1,-1), we can find the coordinates of A' by applying the rule.

`A(1,-1)\rightarrow A^(\prime)(-1,1)`

Since the box corresponds to the first coordinate of A', then:

`?=-1`