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Geometric Shapes: The Basics by
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# Geometric Shapes: The Basics

## Quadrilaterals: A geometric shape with four sides and angles.

### Parallelogram: Quadrilateral with opposite sides parallel.

The U.S. flag is an example of a parallelogram.

### Trapezoid: Quadrilateral that has at least one pair of parallel sides.

This is an example of a trapezoid.

The kites we played with as children is a great example.

### Square: Rhombus with a right angle.

This Rubik's Cube is an example of many squares.

### Rhombus: Quadrilateral where all sides have equal length.

This is an example of a rhombus.

## Triangles: Polygon with three sides and three interior angles.

### Equilaterial Triangle: Polygon in which all three sides and three angles are congruent.

This crossing sign is an equilateral triangle.

### Isosceles Triangle: Polygon where only two sides and two angles are congruent.

The roof of this house is an isosceles triangle.

### Right Triangle: Polygon that has exactly one right angle.

This is an example of a right triangle.