3 years ago

What is the measure of an exterior angle in a regular dodecagon?

1 answer:

7 0

Duodecagon = 12sides
so each interior angle = [(12-2)180]÷12 = 1800÷12= 150°

so an exterior angle = 180 - interior angle
= 180-150 = 30°

You might be interested in

8-4x=4-3(2x+6) ??? Someone help

Maurinko [17]

7 0

3 years ago

Read 2 more answers

If you borrow $1,200 for 3 years at an annual interest rate of 4% how much will u pay?

Anastaziya [24]

I=Prt
I=$1,200(0.04)3
I=$144

7 0

3 years ago

The measure of RST can be represented by the expression (6x + 12)°.

Valentin [98]

Answer:

The measure of angle RST is $120\°$

Step-by-step explanation:

see the attached figure to better understand the problem

we know that

$m$ -----> equation A

$m$ -----> equation B

equate equation A and equation B

$(6x+12)\°=78\°+(3x-12)\°$

$6x-3x=78\°-24\°$

$3x=54\°$

$x=18\°$

The measure of angle RST is equal to

$m$

8 0

3 years ago

Read 2 more answers

How to determine relationship between two variables with standard deviation?

luda_lava [24]

Standard deviation is the average distance between two points on the graph. If the standard deviation (sd) is high, then the variables relationship is more spread out and unlike one another. The smaller the sd, the closer and less varied the variables are.

6 0

3 years ago

Explain how to model the problem with algebra tiles and then write an algebraic expression that represents the situation.

jeka57 [31]

Step-by-step explanation:

the answer is in the picture

8 0

3 years ago

Read 2 more answers