Which statement must be true about a figure that is congruent to Joaquin’s triangle? It has two angles on the x-axis. It has a side that is 9 units long. It has a side that lies on the x-axis. It has an obtuse angle.

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the dependent variable in galileo's experiment?