This is a fun digital matching and puzzle assembling activity on linear pairs. For each problem it is given a diagram. Students use the information in the diagram to find the measure of angle x. On the first slide there are given the 16 problems numbered with 1a,2a,3a,4a, 1b,2b,3b,4b, 1c,2c,3c,4c, 1d,2d,3d,4d increasing in difficulty. On the second slide the answers of the problems are given in random order. Students have to type the number of each problem next to its answer in the empty box p