Rhode Island Standards
RI.M:G&M:5. NECAP - Grade Level Expectation: Geometry and Measurement .
M:G&M:5:1. Uses properties or attributes of angles (right, acute, or obtuse) or sides (number of congruent sides, parallelism, or perpendicularity) to identify, describe, classify, or distinguish among different types of triangles (right, acute, obtuse, equiangular, or equilateral) or quadrilaterals (rectangles, squares, rhombi, trapezoids, or parallelograms). (State)