Find the sum of the interior angles of a nonagon. (1 point)

140°

1,620°

1,260°

1,450°

Find the measure of each interior angle of a polygon with 12 sides. (1 point)

1,800°

150°

180°

145°

Four of the angles of a pentagon measure 85°, 110°, 135°, and 95°. Find the measure of the missing angle. (1 point)

115°

95°

135°

85°

My answers:

- 1,260°
- 150°
- 115°
1 0 2,386

asked by Delilah

Feb 5, 2013

All are right. 1 0

👩🏫

Ms. Sue

Feb 5, 2013

2.

Find the sum of the interior angles of a nonagon. (1 point)

140°

1,620°

1,260°

1,450°

When you walk all the way around a figure with straight sides clockwise you turn 360 degrees. Ech of your right turns is 180 – interior angle there

in this case 9 * right turn angle = 360

right turn angle = 40

so each interior angle is 180 – 40 = 140

9* 140 = 1260

4.

Same deal for the next one

360/ 12 = 30

180 – 30 = 150 = interior angle

5.

each exterior angle = 180 – angle

180 – 85 = 95

180 – 110 = 70

180 – 135 = 45

180 – 45 = 85

then we have (180-x)

95+70+45+85 +180 – x = 360

475 – x = 360

x = 115

1 1

posted by Damon

Feb 5, 2013

Those answer are all correct, good job.

0 0

posted by Ms. Smart

Feb 10, 2017

Connexus answers

- B
- C
- A
- B
- A
- C
- D
- C
- B
- D
- C
- You have to do that one yourself it’s a writen answer.
8 1

posted by Allison

Feb 3, 2019

Thank you Allison

0 0

posted by UnaLoca

Feb 4, 2019

Nice job Allison! Those answers are 100%

0 0

posted by MarineCat6

Feb 12, 2019