Question

Nina has prepared the following two-column proof below. She is given that ZOLN = ZLNO andShe is trying to prove that ol=on

Answer 1

First error:

Draw OE as a perpendicular bisector of LN

First correction:

Draw OE as a bisector of By construction

Second error:

By transitive property of equality

x and y are equal because of the property of the sum of the internal angles of a triangle

a + b + x = 180°

a + b + y = 180°

Second correction:

Sum of the internal angles of a triangle