Alejandro is repairing a stalned glass window. He needs to take it apart to repair it. Befgre taking it apart, he makes a sketch with angle measures to put it back together
Write an equation, and use it to determine the measure of the unknown angle

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.