Determine a missing angle measurement using the sum of the interior angle of the polygons By :Jourdynn Leigh Dickerson.

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Presentation transcript:

Determine a missing angle measurement using the sum of the interior angle of the polygons By :Jourdynn Leigh Dickerson

Main Menu What is a Quadrilaterals Angles in a quadrilaterals Missing angles in a quadrilaterals

What is a Quadrilateral ? A Quadrilateral is a polygon that has four sides. An example of a quadrilateral is a square or rectangle or a trapezoid.

Question #1 1) Which of the following is NOT a Quadrilateral? A) RectangleRectangle B)SquareSquare C)CircleCircle

Question #2 What is a Quadrilateral? A) Polygon with 4 sidesPolygon with 4 sides B)Polygon with 6 sidesPolygon with 6 sides C)Polygon with 3 sidesPolygon with 3 sides

Omg Look I’m a Square!!!!!!! I’m a Rectangle!!!!!! I am a Trapezoid Look At This Chart!!! NameSidesAngles Triangle33 Quadrilateral44 Pentagon55 Hexagon66 Heptagon77 Octagon88 Nonagon99 Decagon10

Angles in a Quadrilaterals There should be 4 angles in a Quadrilateral. A angle is a figure formed by 2 lines diverging in a common point. Here are some examples of angles

Question # 1 1) What is a angle? A)A figure formed by 2 lines diverging in a common point.A figure formed by 2 lines diverging in a common point. B) A figure formed by 5 lines diverging in a common angle bisector.A figure formed by 5 lines diverging in a common angle bisector. C) A figure formed by 7 lines diverging in a common point.A figure formed by 7 lines diverging in a common point.

Question # 2 How many angles are in a quadrilateral? A)66 B)44 C)1717

Missing angles in a Quadrilaterals. First of all the angles in a quadrilateral add up to 360º. Then to find the missing angle in a quadrilateral go to the next slide.!

How to find a missing Angle First you have to follow this procedure: First you add up all the angles except for the missing angle. Next you have to subtract whatever number you got from the last one from 360º. Finally you’ve got your answer !!!

Question #1 In a quadrilateral what does all the angles equal up to? A) B)400 C)360

Question #1 How do you find the missing angle of a quadrilateral? True or False.TrueFalse Step 1:Add Step 2: Subtract Step 3:Answer

Guess What……..

 Your correct!! Your correct!! Your correct!!