Polygon Angles

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

• 7
• 9
• 10
• 12

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.3

What is the value of x?

• 26.25
• 38.75
• 24
• 25.125

Tags

CCSS.7.EE.B.3

CCSS.7.EE.B.4

CCSS.7.G.B.5

Look at this convex polygon.How many triangles are formed by drawing all the diagonals from a single vertex?

• 2
• 3
• 4
• 1

Tags

CCSS.7.G.A.2

Find the value of x

• 141
• 150
• 135
• 163

Tags

CCSS.7.G.B.5

How many sides does a 34-gon have?

• 5760

• 34

• 169.4

• 32

How many sides does a nonagon have?

• None

• 90

• 9

• 11

What is the sum of the measures of the interior angles of an octagon?

• 1440

• 135

• 45

• 1080

What is the sum of the exterior angles of an octagon?

• 45 degrees

• 135 degrees

• 1080 degrees

• 360 degrees

What is the sum of the exterior angles of a 540-gon?

• 540 degrees

• 360 degrees

• 0.7 degrees

• 96840 degrees

• x = - 40

• x = 280

• x = 140

• x = 80