If you grab onto the shaft of Cross[X, Y] with your right hand so as to use your fingers to push X onto Y through the smaller of the two possible angles, does your thumb point with Cross[X, Y] or against Cross[X, Y]? Do more experiments like these and then describe how Cross[X, Y] is oriented with respect to X and Y

Write a function for a rotation 90 degrees counter clockwise about the origin, point 0

Amira is painting a rectangular banner 2 1/4 yards wide. the banner will have a blue background. amira has enough paint to cover 1 1/2 square yards of the wall. the school colors are blue and yellow, so amira wants to add yellow rectangles on the left and right sides of the blue rectangle. the yellow rectangles will each be 3/4 yards wide and the same height as the blue rectangle. what will be the total area of the two yellow rectangles?

I'm a polygon i have no parallel lines i am formed 3 line segments i have one right angle two of my angles are angles what am i