Polygons and Diagonals

What is the measure of one exterior angle in regular dodecagon?

• 150

• 30

• 36

• 144

The diagonals of a rhombus (select two )

• are perpendicular

• are congruent

• bisect opposite angles

• are parallel

Tags

CCSS.HSG.CO.C.11

Find x

• 84

• 21

• 43.5

• none of the above

Solve for x

• 7

• 8

• 19

• 1

Tags

CCSS.3.MD.D.8

Solve for x

• 3

• 4

• 5

• 6

Tags

CCSS.HSG.CO.C.11

• parallelogram

• regular hexagon

• equilateral hexagon

• equiangular hexagon

Tags

CCSS.2.G.A.1

• regular heptagon

• concave heptagon

• convex heptagon

• trapezoid

Tags

CCSS.2.G.A.1

ABCD is a parallelogram. If AC = 8x - 14 and EC = 2x + 11, solve for x.

• 7

• 8.5

• 9

• 9.5

Tags

CCSS.HSG.CO.C.11

How many diagonals can be drawn in a 14-gon?

• 56

• 65

• 77

• 84

What is the sum of the measures of the interior angles of an 11-gon?

• 1080 degrees

• 900 degrees

• 1620 degrees

• 1980 degrees