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3 years ago

I need help!!!!!!!! I'm stumped.

Mathematics

1 answer:

juin [17]3 years ago

5 0

Look it up on google its hard

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What is the measure of the sum of all angles in a regular dodecagon (12 sides)? What is the measure of one of its interiors angl

lana66690 [7]

Answer:

Part a) The measure of the sum of all angles in a regular dodecagon is equal to 1,800 degrees

Part b) The measure of one of its interiors angles is 150 degrees

Part c) The measure of one of its exterior angles is 30 degrees

Step-by-step explanation:

Part a) What is the measure of the sum of all angles in a regular dodecagon (12 sides)

we know that

The formula to calculate the sum of the interior angles in a regular polygon is equal to

$S=(n-2)180^o$

where

n is the number of sides of regular polygon

In this problem a regular dodecagon has n=12 sides

substitute

$S=(12-2)180^o$

$S=(10)180^o$

$S=1,800^o$

Part b) What is the measure of one of its interiors angles?

To find out the measure of one of its interior angles, divide the sum of all angles by the number of sides

$1,800^o/12=150^o$

Part c) What is the measure of one of its exterior angles?

we know that

The sum of one interior angle and its corresponding exterior angle must be equal to 180 degrees

Let

x ---> the measure of one exterior angle

$150^o+x=180^o$

solve for x

$x=180^o-150^o$

$x=30^o$

8 0

2 years ago

Factor completely: 8m3 − 12m2 + 4m

Basile [38]

I think the answer is B 4(2m3 - 3m2 + m)

7 0

3 years ago

Find the measure of angle C

NemiM [27]

Answer:

ajnasnnanananandbabbabbansbansbz svabsvsb

6 0

2 years ago

Gretchen rode her snowmobile 1 1/4 miles to a snowmobile trail. She rode on the trail for 5 5/6 miles and then rode back home. W

allsm [11]

Answer:

6 18/12 OR simplified 1 6/12

Step-by-step explanation:

1 1/4 + 5 5/6=

1 + 5 = 6

5/6 + 1/4

Mulitipy fraction by 3 and 2

15/12 + 3/12 = 18/12

18/12 = 1 6/12

5 0

3 years ago

Read 2 more answers

What is the meaning os slpoe in math and please give an example for <br><br> y=2x-1;(-2,2)

alexira [117]

Slope is your 2x, so 2x over 1 meaning after you plot (-2,2) on the graph you rise 2 and go 1 to the right, or do the opposite to make the line so go down 2 and one to the left. Hope that helped.

6 0

2 years ago