PolygonsNot Polygons. What is the definition of a polygon? Answer A closed flat figure with at least...

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Transcript of PolygonsNot Polygons. What is the definition of a polygon? Answer A closed flat figure with at least...

Polygons Not Polygons

What is the definition of a polygon?

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An

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A closed flat figure with at least three straight sides

Quadrilaterals Not Quadrilaterals

What is the definition of a quadrilateral?

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A polygon with four sides

Parallelograms Not Parallelograms

What is the definition of a parallelogram?

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A quadrilateral with two pairs of parallel sides

Rectangles Not Rectangles

What is the definition of a rectangle?

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A quadrilateral with four right angles and two pairs of parallel sides

Square Not Squares

What is the definition of a square?

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A quadrilateral with four right angles, two pairs of parallel sides, and all sides equal

Rhombus Not Rhombus

What is the definition of a rhombus?

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A quadrilateral with two pairs of parallel sides and all sides equal

Trapezoids Not Trapezoids

What is the definition of a Trapezoid?

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A quadrilateral with exactly one pairs of parallel sides

Square

What is the definition of a regular polygon? A

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A polygon with all sides and angles

congruent

What do we call a regular triangle?

Equilateral triangle

What do we call a regular quadrilateral?

trapezoid

square

parallelogram

rectangle

rhombus

Classify each quadrilateral in as many ways as possible by dragging the terms and placing them on top of the shape. Terms may be used more than once.

quadrilateral

rectangle

quadrilateralparallelogram

trapezoid

quadrilateral

rhombusquadrilateral

parallelogram

square

rhombus

parallelogram

quadrilateralrectangle

A polygon is convex if any two interior points can be connected with a segment that lies completely with in the polygon.

A polygon is concave if any two interior points cannot be connected with a segment that lies completely with in the polygon.

A.) Draw and example of a convex polygon.B.) Draw an example of a concave polygon

If you draw a diagonal of a quadrilateral, you will get two triangles.

1.) Use this information to find the sum of the interior angles of a quadrilateral.

Sum of the Interior Angles of a Quadrilateral

The sum of the angles of a quadrilateral is 360 .

xo

(2x + 1)o

68o

Write an equation to find the value of x and then find the value of each missing angle.