For this parallel and perpendicular lines worksheet, students identify angles formed by these lines.  They list and find the measurement of interior angles, exterior angles, alternate interior, alternate exterior and corresponding...

Students use Geometer's Sketchpad to draw triangles and explore the classificaiton of each using the mearsures of interior angles and the lengths of the sides.

Sixth graders draw parallel and intersecting lines to observe and examine the characteristics of alternate interior angles, vertical angles, corresponding angles, and supplementary angles. Through observation, they discover the...