Polygon Internal Measures

The sum of the internal angles of a polygon is 10 right angles. Then the number of sides is

• 5

• 6

• 7

• 8.

The angle sum of a convex polygon with number of sides n is

• (n – 2) 180°

• (n + 2) 180°

• (2n – 4) 180°

• (2n + 4) 180°.

The measures of each of the four angles of a quadrilateral are equal. Find the measure of each angle.

• 45°

• 30°

• 60°

• 90°.

Calculate the values of W,X,Y and Z

• W= 115 , X= 110, Y= 65, Z= 120

• W= 180, X= 23, Y=60 , Z=140

• W= 115 , X= 65, Y= 110, Z= 120

• W= 105 , X= 65, Y= 120, Z= 65

Internal and external angles add up to 360 degrees

• Parallelogram

• Square

• Quadrilateral

• Trapezoid

What are the sum of the exterior angles of a triangle?

• 120

• 180

• 270

• 360

What is the size of one exterior angle of a decagon (10 sides) ?

• 90

• 180

• 360

• 36

What is the correct formula to find the sum of the internal angle measures of a polygon?

• S=(n-2)*180

• n=(s-2)*180

• Sum/Number of Angles

• • 360°

What is the sum of the internal angle measures of a hexagon?

How do you find the missing angle?

• 124 + 77

• 2(77)

• 180 - 77

• 124 - 77