Do not use degrees or angle measures. Use triangles to complete proof

? * FIGURE 2.1. Congruent angles. Theorem 37. Congruent angles have congruent supplements. Assume that X is a point between A and C, that X is also between B and D, and that these points are not all collinear. Then the angles LAXB and ZCXD are called vertical angles. (Figure 2.2.) B A J * X 14) 08 C D FIGURE 2.2. Vertical angles. Some theorems will be labeled as "corollaries". A corollary is an interesting and useful fact that follows fairly directly from a theorem. Often corollaries are further payoffs we get for the hard work of proving a theorem. But we still need to prove each corollary since a corollary is a kind of theorem. Corollary 38. Vertical angles are congruent. Weak Right Angl