Polygons L

How many triangles in a decagon?

• 10

• 8

• 5

• 2

What is the sum of interior angles in a decagon?

• 1440

• 1800

• 2160

• 1260

If one interior angle of a decagon measures 125, what is true about the other 9 angles?

• They must be congruent

• None of them can be congruent

• Their sum is now 1315

• Their sum is now 1440

What kind of polygon is shown?

• Concave

• Convex

Tags

CCSS.2.G.A.1

What is a correct name for this polygon?

• VSTUR

• RSTUV

• USRTV

• TSRUV

Tags

CCSS.2.G.A.1

What kind of polygon is this?

• Triangle

• Pentagon

• Heptagon

• Nonagon

Tags

CCSS.2.G.A.1

Is this a regular polygon?

• Yes

• No

Tags

CCSS.2.G.A.1