Angles of Polygons

Determine the number of triangles formed by drawing the diagonals from one vertex in the octagon.

• 6

• 7

• 8

• 10

Tags

CCSS.7.G.A.2

Identify the expression that will find the sum of the angle measures of the pentagon.

• $5\times180$

• $5+180$

• $3\times180$

• $3+180$

Tags

CCSS.7.G.B.6

Find the unknown angle measure.

• $220\degree$

• $40\degree$

• $180\degree$

• $50\degree$

Tags

CCSS.7.G.B.5

A quadrilateral has three angles that measure 90°, 80°, and 74°. Find the unknown angle measure.

• 109°

• 116°

• 232°

• 123°

Tags

CCSS.7.G.B.5

Find the sum of the angle measures by dividing the polygon into triangles.

• 720°

• 4°

• 540°

• 900°

Tags

CCSS.7.G.B.5

CCSS.7.G.B.6

Find the sum of the angle measures by dividing the polygon into triangles.

• 3°

• 720°

• 360°

• 540°

Tags

CCSS.7.G.B.5

CCSS.7.G.B.6

Find the sum of the angle measures by dividing the polygon into triangles.

• 1080°

• 900°

• 720°

• 5°

Tags

CCSS.7.G.B.5

CCSS.7.G.B.6

A polygon has 8 sides. What is the sum of its interior angles?

• $1,080\degree$

• $1,620\degree$

Tags

CCSS.7.G.B.6

Two angles of a triangle measure   $10\degree$  and $80\degree$   . What is the measure of the third angle of the triangle?

•  $10\degree$  

•  $80\degree$  

•  $90\degree$  

•  $110\degree$  

Tags

CCSS.8.G.A.5

A polygon has 13 sides. What is the sum of its interior angles?

• $1,300\degree$

• $1,620\degree$

• $1,980\degree$

• $2,340\degree$

Tags

CCSS.7.G.B.6