1 / 18

# Quadrilaterals - PowerPoint PPT Presentation

Quadrilaterals. Definition. A quadrilateral is a closed geometric figure with four sides, four vertices, and four angles. The segments of a quadrilateral intersect only at their endpoints. Quadrilaterals. Not Quadrilaterals. Non consecutive sides should not intersect. More than 4 sides.

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

Definition
• A quadrilateral is a closed geometric figure with four sides, four vertices, and four angles.
• The segments of a quadrilateral intersect only at their endpoints.

Non consecutive sides should not intersect

More than 4 sides

Must only contain Segments

3 sides

• Quadrilaterals are named by listing their vertices in order. There are many names for the quadrilateral below. Some examples are quadrilateral ABCD, quadrilateral BCDA, or quadrilateral DCBA.
Sides
• Any two sides, vertices, or angles of a quadrilateral are either consecutive or nonconsecutive.
• In a quadrilateral, nonconsecutive sides, vertices, or angles are also called opposite sides, vertices, or angles.
Diagonals
• Segments that join nonconsecutive vertices of a quadrilateral are called diagonals.

90º

90º

90º

90º

360º

70º

70º

360º

360º

90º

90º

90º

110º

110º

90º

115º

65º

90º

90º

360º

360º

65º

115º

90º

90º

Properties
• The sum of all the angles equals 360º degrees.
• A quadrilateral is a four-sided polygon, but some of them have characteristics that make them special.
• We will be covering 6 special quadrilaterals:
• Parallelogram
• Rectangle
• Square
• Rhombus
• Kite
• Isosceles Trapezoid

Parallelogram

Rectangle

Isosceles

Trapezoid

Rhombus

Square

Kite