Jack has a tree in his backyard that he wants to cut down to ground level. he needs to know how tall the tree is, because when he cuts it, it will fall toward his fence. jack measured the tree's shadow, and it was measured 20 feet long. at the same time jacks shadow was 22 feet long. jack is 5 feet long. a) how tall is jack? b) will the tree hit the fence if it is 9 feet away?

Graph a triangle (xyz) and reflect it over the line y=x to create triangle x’y’z’. describe the transformation using words. draw a line segment from point x to the reflecting line, and then draw a line segment from point x’ to the reflecting line. what do you notice about the two line segments you drew? do you think you would see the same characteristics if you drew the line segment connecting y with the reflecting line and then y’ with the reflecting line? how do you know?