This is an activity to review basic concepts of triangles in Geometry for middle school and high school.
It can be done as a whole-class activity where students are given one card each and they have to say the question they have aloud and somebody else in the class will have the answer. That person will say it and ask the next question making a chain of questions and answers.
After having a few runs for practice, you can make competitions between blocks to see which class makes the best time.
It is a simple idea but keeps students engaged and they even push each other to keep the flow going.
You can edit this Power Point according to your needs. I left one blank slide with the same format in case you want to modify it.