12/4 Warm Up

What is the measure of ONE interior angle in a regular pentagon (5-sides)?

• 90°
• 108°
• 120°
• 180°

What is the measure of ONE interior angle in a regular triangle (3 sides)?

• 15°
• 30°
• 60°
• 90°

Find the angle SUM of the interior angles of the polygon.

• 180°

• 540°

• 720°

• 1080°

Find the value of X

• 94
• 25
• 36
• 180

What is a polygon called if the sum of its interior angles equals 1440° ?

• Octogon

• Nonagon

• Decagon

• Dodecagon

What is the formula for the sum of interior angles in a polygon?

• 180(n−2)

• 180(n−2)÷n

• 360

• 360/n