need help with geometry

Hey there!

First you must find what the angles are. Angles $KJL$ and $MLN$ are equal, we can use this to find $x$,

$6x-2=5x+10$

$x=12^o$

Using this you now know what all angles are going to be:

$KLJ=70^o,MLN=70^o, NML=65^o, KJL=60$

Also using the knowledge that there is $180^o$ in a triangle you can find the last 2 angles:

$JKL=180-70-60=50^o$

$MNL=180-70-65=45^o$

Finally you can use this to find the true statements that you have provided.

Let me know how you go :)