Understand that noncongruent plane figures remain noncongruent even if they are in different spatial orientations.
The student will identify and describe congruent and noncongruent plane figures.
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An equilateral triangle has three congruent sides. All angles of an equilateral triangle are congruent and measure 60 degrees.
Guided explorations of the study of symmetry using mirrors, paper folding, and pattern blocks will enhance students’ understanding of the attributes of symmetrical figures.
Determine a line of symmetry that results in two figures that have the same size and shape and explain reasoning. (a, b)
Create figures with at least one line of symmetry using various concrete materials.
Congruent figures have the same size and shape. Congruent sides are the same length.