Unit Two: Proof Formats - To Prove Statement

How many parts are there in the format of a two-column proof? 3 4 5 6

6

From the figure and statement provided, select the proper TO PROVE statement. If B is between A and C, then AB + BC = AC MN = 1/2 AB AB + BC = AC m is parallel to l AB = BC a is parallel to b

AB + BC = AC

From the figure and statement provided, select the proper TO PROVE statement. If a segment joins the midpoints of two sides of a triangle, its length is one-half the length of the third side. MN = 1/2 AB AB + BC = AC m is parallel to l AB = BC a is parallel to b

MN = 1/2 AB

The "to prove" part of the information is the _____ of the "if-then" statement. if then none of the above

Then

From the figure and statement provided, select the proper TO PROVE statement. If two parallel planes are cut by a third plane, the lines of intersection are parallel. MN = 1/2 AB AB + BC = AC m is parallel to l AB = BC a is parallel to b

a is parallel to b

From the figure and statement provided, select the proper TO PROVE statement. Through a point outside a line one line can be drawn parallel to the line. MN = 1/2 AB AB + BC = AC m is parallel to l AB = BC a is parallel to b

m is parallel to l