A.Construct triangle xyz in which xy=8.3 yz=11.9 and xyz=60

B.Construct m,the mid-point of xz
C.measure ym

3 answers

Cannot construct anything on these posts.
I assume you know the rudiments of constructions. Making a 60° angle is easy.
Once that is done, just mark off X and Z at the proper lengths.
Then construct the perpendicular bisector of XZ to find M.

These are some of the very first constructions usually taught; if you are still stuck, google can provide many examples and discussions.
How to do perpendicular bisector