This Java applet enables students to investigate acute, obtuse, and right angles. The student decides to work with one or two transversals and a pair of parallel lines. Angle measure is given for one angle. The student answers a short series of questions about the size of other angles, identifying relationships such as vertical and adjacent angles and alternate interior and alternate exterior angles. In addition to automatically checking the student's answers, the applet can keep score of correct answers. From the activity page, What, How, and Why buttons open pages that explain the activity's purpose, function, and how the mathematics fits into the curriculum. Supplemental resources include lesson plans and a handout with a grid for showing the relationship between all possible angles that occur when parallel lines are cut by a transversal. Copyright 2005 Eisenhower National Clearinghouse


  • Mathematics > General

Education Levels:

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Informal Education,Plane geometry,Middle School,NSDL,High School,Geometry,Grade 8,Grade 9,NSDL_SetSpec_1007936,oai:nsdl.org:2200/20120114184213146T,Lines and planes,Grade 10,Angles,Mathematics,Physics,Grade 7



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