Fill in the blanks for the paragraph proof for . Given: , , and Prove: Proof: All radii of a circle are congruent, so , and since and , then are right triangles by the __________ congruency theorem. The corresponding sides of the triangles, and , are congruent, so ZV = YX. Thus, we know that 2ZV = 2YX by the multiplication property of equality. By a congruency theorem that states, “if a diameter of a circle is perpendicular to a chord, then the __________,” bisects and bisects , so VU = 2ZV and XW = 2YX. Therefore, we can conclude that VU = XW, or .