How to create Isosceles trapezoid?

1) I create a horizontal rectangle shape. 2) I select the 2 top anchor points using Direct Select, the white arrow (A) while holding shift. 3) If I move them the move the same way forming a parallelogram.

I'd like to know a way for these two top anchors will move mirrored so it form a (tryed alt, etc but couldn't catch it, or if theres a better way to make a trapezoid .