Classifying Quadrilaterals for 4th Grade
Quadrilaterals are classified by their parallel sides, equal sides, and right angles, which is why a square is also a rectangle and a rhombus. The categories nest rather than exclude each other. The examples below show that hierarchy, with practice problems.
DETAILED EXPLANATION
Quadrilaterals have four sides. Types include square, rectangle, rhombus, trapezoid, parallelogram. Squares and rectangles have right angles; parallelograms have two pairs of parallel sides.
WORKED EXAMPLES WITH STEP BY STEP SOLUTIONS
Example 1
Name a quadrilateral with four right angles.
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Solutions:
Step 1: Apply the concept from the lesson above.
Step 2: Carry out the operation or reasoning.
Answer: A square or a rectangle (both have four right angles).
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