1. What is the measure of the sum of all angles in a regular dodecagon? What is the measure of one of its interior angles and one of its exterior angles?

2. Find the coordinates of point A for the parallelogram shown.

3. Given ∆ABC with A(0,2), B(-2, -4), and C(4,4).
a. Write the equation for the line containing altitude AZ in standard form.
b. Write the equation of the line containing midsegment XZ in standard form, where X is the midpoint of AB and Z is the midpoint of BC.

Question

1. What is the measure of the sum of all angles in a regular dodecagon? What is the measure of one of its interior angles and one of its exterior angles?

2. Find the coordinates of point A for the parallelogram shown.

3. Given  ∆ABC with A(0,2), B(-2, -4), and C(4,4).
a. Write the equation for the line containing altitude AZ in standard form.
b. Write the equation of the line containing midsegment XZ in standard form, where X is the midpoint of AB and Z is the midpoint of BC.

shadyykatie · Answer

this is for # 2

anonymous · Answer

http://www.1728.org/polygon.htm

anonymous · Answer

For #1 does all angles mean interior and exterior angles summed up or one or the other?

shadyykatie · Answer

interior and exterior angles summed up

anonymous · Answer

#1 Part 1 ~ 2,100 degrees.

anonymous · Answer

#1 Part 2 ~ Sum of ONE EXTERIOR ANGLE is 30 degrees.

anonymous · Answer

#1 Part 3 ~ Sum of ONE INTERIOR ANGLE is 150 degrees.

anonymous · Answer

IDK, for the rest, sorry.

shadyykatie · Answer

it's ok thank you for helping it means a lot to me (: