m1 = 27
m2= 27 also
To do this, Triangle abd is a right triangle. As the square in angle adb shows its 90°. Which shows that angle cdb is also 90°. All triangles equal 180° so add 90° to 63° (angle dcb) which equals 153. Take 180 and subtract 153 and you get 27° as the measurement of thr missing angle m1. Repeat for missing angle 2 ( which is also 27°)
This should be repeatable for the problems above too.