Classify 2D Shapes (5.5A)

Front

What is a polygon?

Back

A polygon is a closed figure made up of straight line segments. Examples include triangles, quadrilaterals, pentagons, and hexagons.

Front

What are the characteristics of a triangle?

Back

A triangle has three sides, three angles, and the sum of its interior angles is always 180 degrees.

Front

What defines a quadrilateral?

Back

A quadrilateral is a polygon with four sides and four angles. Examples include squares, rectangles, and trapezoids.

Front

What is a trapezoid?

Back

A trapezoid is a quadrilateral with at least one pair of parallel sides.

Front

What is a rhombus?

Back

A rhombus is a type of quadrilateral where all four sides are of equal length, and opposite angles are equal.

Front

What is a pentagon?

Back

A pentagon is a polygon with five sides and five angles.

Front

What is the difference between a regular and irregular polygon?

Back

A regular polygon has all sides and angles equal, while an irregular polygon does not.

Front

What is a circle in relation to polygons?

Back

A circle is not a polygon because it does not have straight sides; it is a round shape with no corners.

Front

How can polygons be classified?

Back

Polygons can be classified based on the number of sides (triangles, quadrilaterals, etc.) or by their properties (regular vs. irregular, convex vs. concave).

Front

What is a convex polygon?

Back

A convex polygon is a polygon where all interior angles are less than 180 degrees, and no sides are curved inward.