Practice for Plan for Error: Break It Down

Question) How can you identify a right triangle? Target Response) A right triangle has exactly one right angle and two acute angles. The right angle should be 90* degrees, like the corner of your paper's angle. Student Misconception) A right triangle consists of right angles. BREAK IT DOWN: 1) Narrow or eliminate false choices: Lets slow down for a minute. How many right angles does this triangle. 2) Provide the missing step: What do we know about a right angle? 3) Provide a rule: What do we do to find out if it's a right angle?