A. m_1 = m 2
B. m 4 = m_6
C. m21+m_5= 90°
D. m23+ m25 = 180°
E. m27 = m_8

answer: i realy don't get it that much can you me figer it out pleas you

step-by-step explanation:

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answer: the proof is mentioned below.

step-by-step explanation:

since, given:   lines bc = ef

prove:   lines ac > ef

          statements                                           reason

1. bc=ef                                           1. given

2. ac= ab+bc                                 2. because b is the point between the  

                                                            line segment ac

3.   ac > bc                                       3. because if a line segment is equal to

                                                          the sum of two line segments then it is

                                                          always greater then each of these

                                                          individual line segments

4. ac > ef                                         4. by equality property.