Geometry Unit 2 Review

What is the sum of the interior angles of the decagon?

• 360°

• 180°

• 1080°

• 1440°

• 60°

• 45°

• 90°

• 30°

Tags

CCSS.8.G.A.5

A polygon has an interior angle sum of 2160°. How many sides must the polygon have? Enter the number of sides the polygon will have.

(a)  

If the length of each leg of an isosceles triangle is 10 meters, and the base is 12 meters long, what is the length of the altitude to the base?

• 8m

• 15 m

• 8.5m

Tags

CCSS.HSG.CO.C.11

What is the value of x?

(a)  

Tags

CCSS.8.G.A.5

Tags

CCSS.8.G.A.5

A triangle has angles that measure (x + 30)°, (2x + 25)°, and (9x + 65)°, respectively. Which of the following terms describes this triangle?

• Equilateral

• Isosceles

• Right

• Obtuse

Tags

CCSS.8.G.A.5

In the diagram, ΔABC is an equilateral triangle with a perimeter of 24 inches. What is the length of altitude h of this triangle?

• 4√2

• 8√2

• 4√3

• 8√3

Tags

CCSS.HSG.CO.C.10

If EF = 9, the value of AC is (a)  

Tags

CCSS.HSG.CO.C.10

Tags

CCSS.HSG.CO.C.9