Using only Euclid's 5 postulates, prove that when two parallel lines are crossed by a transversal, the alternate interior angles are congruent.

Can you please answer 8,9,10,12, and 13 and the x and y intercept

1.Answer the question

36. what is the equivalent statement of the conditional: "if three points are non-collinear, then they form a unique plane." " If three points are collinear, then they do not form a unique pla ne. If three points form a unique pla ne, then they a re non-collinear. 37, what is the equivalent statement of the converse: "if the Lines do not intersect, then they are parallel."? If two lines intersect, then they a re pa ra llel. If two lines a re pa ra llel, then they never intersect. 38. What will be the valid conclusion for the given hypothesis: "If m 21+ mz 2 = 90, Then they a re congruent. Then they a re complementary.