Classify triangles as equilateral, scalene, or isosceles.
The student will classify a) angles as right, acute, obtuse, or straight; and b) triangles as right, acute, obtuse, equilateral, scalene, or isosceles.
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The student will a) define polygon; b) identify and name polygons with 10 or fewer sides; and c) combine and subdivide polygons with three or four sides and name the resulting polygon(s).
The student will identify and trace, describe, and sort plane geometric figures (triangle, square, rectangle, and circle) according to number of sides, vertices, and right angles.
Subdivide a three-sided or four-sided polygon into no more than three parts and name the resulting polygon(s). (c)
heptagon is a seven-sided polygon;
Identify the attributes of an object (e.g., color, size, shape, thickness).