Can someone me with this question pleae

answer is a. i think...

choice A) 60 degrees

Angle A and angle D are similar angles as they are the first letters in ABC and DEF respectively. So angle A = angle D = 50

Angles B and E are also congruent as they are the middle letters in ABC and DEF. So angle B = 70 because angle E = 70.

Angle C = angle F as these letters are the third letters of ABC and DEF.

Use the fact that three angles of any triangle add to 180 degrees to find the measure of angle C.

A+B+C = 180

50+70+C = 180 plug in A = 50, B = 70

120+C = 180

C = 180 - 120

C = 60

Angle F is also 60 degrees as well.