Int/Ext Angles of Polygons and Triangle Inequalities

What is the formula for the sum of the interior?

• S=360
• S=(n-2)180
• n=360/ext. angle
• 1 int. angle + 1 ext. angle=180

Tags

CCSS.HSG.CO.C.10

What is the SUM of the angle measures in a nonagon (9 sides)?

• 1440°
• 900°
• 1080°
• 1260°

Tags

CCSS.7.G.B.6

What is the SUM of the angle measures in a hexagon (6 sides)?

• 720°
• 1080°
• 600°
• 540°

Tags

CCSS.7.G.B.5

What is the SUM of the angle measures in a triangle (3 sides)?

• 60°
• 90°
• 120°
• 180°

Tags

CCSS.8.G.A.5

What is the formula for finding ONE interior angle of a polygon?

• S= (n-2)180
• S= (n-180)2
• S= (n-2)180/n
• S= (n - 180)2/n

What is the measure of ONE interior angle in a regular pentagon (5-sides)?

• 90°
• 108°
• 120°
• 180°

The measures of one angle of a regular polygon is 140^o.  What is the name of the polygon? (Hint: Solve for n)

• Decagon
• Nonagon
• Heptagon
• Hexagon

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.3

What is the measure of ONE interior angle in a regular hexagon (6 sides)?

• 60°
• 80°
• 108°
• 120°

Tags

CCSS.4.MD.C.5

CCSS.4.MD.C.6

A regular polygon has an INTERIOR angle with a measure of 60.  How many sides does it have? (Hint: Solve for n)

• 6
• 120
• 3
• 60

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.3

CCSS.HSA.SSE.A.1

Find the value of X.

• 100
• 120
• 125
• 130

Tags

CCSS.4.MD.C.5

CCSS.4.MD.C.7

CCSS.4.OA.A.3