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Texas Essential Knowledge and Skills Teaching Resources

Math 4.6

Geometry and measurement. The student applies mathematical process standards to analyze geometric attributes in order to develop generalizations about their properties. The student is expected to:

  • (1) identify points, lines, line segments, rays, angles, and perpendicular and parallel lines;
    • (A) identify and draw one or more lines of symmetry, if they exist, for a two-dimensional figure;
    • (B) apply knowledge of right angles to identify acute, right, and obtuse triangles; and
    • (C) 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.