Here are two earlier posts that have some practice problems with answers.
Look at Part B) in this post.
Look at problems 3) and 4) in this post.
Here are some more problems.
1) You are told you have a right triangle. If the second angle is given, either find the third angle or say it is not possible.
2) You are told you have an isosceles triangle. If one angle less than 180° is given, there is always an isosceles triangle that has that measure as the size of one angle. Sometimes, there is also a second possible triangle with that angle measure. Find both triangles if possible, or find the only possible isosceles triangle with that angle measure and write NO SECOND TRIANGLE POSSIBLE as the second answer.
Answers to these new problems in the comments.