Đa giác

What is a polygon?

• A closed figure made up of straight line segments
• An open figure made up of straight line segments
• A closed figure made up of curved edges
• An closed figure made up of crossed line segments

Is the figure a polygon? What type?

• No, Quadrilateral
• Yes, Hexagon
• Yes, Octagon
• No, Octagon

 What is the name of this polygon?

• a pentagon
• a quadrilateral
• an octagon
• a triangle

What is the name of this shape?

• circle

• hexagon

• square

• triangle

If the sum of the interior angles of a polygon equals 900°, how many sides does the polygon have? 

• 7
• 9
• 10
• 12

What is a polygon called if the sum of its interior angles equals 1440° ?

• Octogon
• Nonagon
• Decagon
• Dodecagon

An exterior angle of a regular polygon
measures 36°. How many sides does
the polygon have? 

• 10
• 5
• 14
• 9

Find the measure of the sum of the exterior angles in a hexagon

• 360
• 180
• 720
• 540

Find the sum of interior angles in a heptagon

• 900
• 720
• 540
• 180

What is the measure of each interior angle of a regular octagon?

• 135

• 180

• 145

• 190