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3 years ago

Find the exterior angle of a regular decagon

Mathematics

1 answer:

mamaluj [8]3 years ago

6 0

Answer:

Exterior Angle = 36 degrees

Step-by-step explanation:

Each interior angle of a regular decagon measures 144 degrees.

=> We'll subtract 144 from 180 to get the measure of the exterior angle.

=> Exterior Angle = 180-144

=> Exterior Angle = 36 degrees

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alexira [117]

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3 years ago

PLEASEEE HURRYYY

Masteriza [31]

Answer:

(2,-5) and (2,1).

Step-by-step explanation:

We need to find the find all the points having an x coordinate of 2 whose distance from the point (-2,-4) is 5.

A circle with center (-2,-4) and radius 5 represents all the points whose distance from the point (-2,-4) is 5.

Standard form of a circle is

$(x-h)^2+(y-k)^2=r^2$

where, (h,k) is center and r is the radius.

$(x-(-2))^2+(y-(-4))^2=(5)^2$

$(x+2)^2+(y+2)^2=25$

Now, put x=2.

$(2+2)^2+(y+2)^2=25$

$(4)^2+(y+2)^2=25$

$(y+2)^2=25-16$

$(y+2)^2=9$

Taking square root on both sides.

$y+2=\pm\sqrt{9}$

$y+2=\pm3$

$y+2=-3\text{ or }y+2=3$

$y=-5\text{ or }y=1$

So, the y-coordinates of the points are -5 and 1.

Therefore, the required points are (2,-5) and (2,1).

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3 years ago

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slamgirl [31]

Answer:

10%

12.5%

13%

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Step-by-step explanation:

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1/8 = 12.5%

13%

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19%

Then you can order them from least to greatest.

10%, 12.5%, 13%, and then 19%

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2 years ago

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soldier1979 [14.2K]

Answer:

Step-by-step explanation:

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3 years ago

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If the measures of two angles of a triangle are 95 and 14°, what is the measure of the third angle?

marin [14]

Answer:

71°

Step-by-step explanation:

95° + 14° = 109°

180° in a triangle

180° - 109° = 3rd angle = 71 °

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3 years ago

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Find the exterior angle of a regular decagon​

Find the exterior angle of a regular decagon