Obtain the truth value of (i)
If 5 + 6 = 11, then 11 – 6 = 5.

(ii)
If 5 + 8 = 12, then 12 + 8 = 20.

(iii)
If 6 + 9 = 14, then 14 – 7 = 8

(iv)
If 7 + 8 = 15, then 8 – 7 = 2
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The figure shows triangle def and line segment bc, which is parallel to ef: triangle def has a point b on side de and point c on side df. the line bc is parallel to the line ef. part a: is triangle def similar to triangle dbc? explain using what you know about triangle similarity. part b: which line segment on triangle dbc corresponds to line segment ef? explain your answer. part c: which angle on triangle dbc corresponds to angle f? explain your answer. asap