Question 9 Multiple Choice Worth 5 points) (02.07 HC)
A student writes an incorrect step while checking if the sum of the measures of the two remote interior angles of triangle ABC below is equal to the measure of the exterior
Step 1: m2x +mzy + mzz = 90 degrees (sum of adjacent angles)
Step 2: mzw+mzz = 180 degrees (supplementary angles)
Step 3: Therefore, mzx+may+mzz = mzw+mzz
Step 4: So, m2x + m2y = mzw
In which step did the student first make a mistake and how can it be corrected?
Step 1; it should be mex + m2y + m2z = 180 degrees (sum of angles of a triangle)
Step 1; it should be mex + m2y + m2z = 180 degrees (corresponding angles)
Step 2; it should be mzw+mzz = 90 degrees (supplementary angles)
Step 2; it should be mzw+mzz = 90 degrees (adjacent angles)