Recognize right triangles as a category, and identify right triangles.ĬCSS 7.G.A.2 Draw (freehand, with ruler and protractor, and with technology) geometric shapes with given conditions. Clever students (with lucky rolls) should be able to complete the task in less than six turns.ĬCSS 4.G.A.2 Classify two-dimensional figures based on the presence or absence of parallel or perpendicular lines, or the presence or absence of angles of a specified size. But this triangle will also be an acute triangle (or an isosceles right triangle). Can students make six kinds of triangles in less than six turns? Maybe! If they get some lucky rolls! For example, if a student gets a roll with two of the same numbers, they should make an isosceles or equilateral triangle (depending on what angles they draw). Here's where the strategy and critical thinking come in. They draw the triangle in one of the boxes on their paper and measure and label the third side length. They roll them and use the two numbers as side lengths in centimetres for a triangle. Students work independently or in small groups. Use this game to reinforce the definitions of each of these six triangles in a geometry/measurement unit. Three are classified by their side lengths: scalene, equilateral, and isosceles. Three are classified by their angles: acute, right, and obtuse. Here's a deceptively simple dice game to practice identifying and creating six kinds of triangles.
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