Exterior angle
Exterior angles = 360 360/7~51.42 =51.4
this|dw:1537391130728:dw| suppose this is a regular 7 sides polygon
how you get the measure of an exterior engle ?
all exterior angles = 360*?
moment one interior angle how many degree will have ?
900/7 ~129
and so you know that one interior angle toghether with exterior angle need making 360 degrees yes ?
yes
So Interior + exterior = 360 Degrees
just one
exactly
yes than you know the measure of one interior angle you can calcule easy the measure of one exterior angle
ok. ?
i think so
this is the best easy way
so 129 + x = 360 360 - 129 = x x = 231?
yes right
than this 129 is the measure of one interior angle
Okay, i need one measure of an exterior angle, and all exterior angles = 360
51.4 x 7 = 359.8
this 51,4 degrees is the central angle of a regular 7 sides polygon yes ?
No, Im saying one exterior angle of a 7 side Polygon equals 51,4
Also, What language do you speak if it makes it easier i can use a translator
this is impossibile bc. than you see my posted drawn there tan exterior angle is greater than 100 degrees - no ? pardon for my english but this not is my mather language - sorry
I know it's fine i can understand you. And yes if you add a line to the outside it makes it obtuse
ok. so than you see this my drawn how you think that you can calcule the measure of an exterior angle ? using these traingles
these triangles
use what you know that one triangle has total angle measure of 180 degrees and you know that the central angle maesure is 51,4 degrees and again you know that the second and 3rd angles are congruent
|dw:1537392297014:dw|
its terrible but just go with it
Pot să folosesc un traducător pentru a vorbi în limba dvs., dacă doriți să faceți acest lucru mai ușor
180-51,4 = x so x/2 is the measure of second and 3rd angle and you know that ohhh mamá hai sá vorbim románeste atunci
180 - 51,4 = 128,6/2 = 64,3
yes but now you need using what you know that the measure of an exterior angle together with this 128,6 make 360 degrees yes ?
128,6 + 129 = 257,6
check please my posted drawn above
Okay hold on let me start over, the sum of all exterior angles is 360
there are 7 exterior angles
360 / 7 = 54.1
no this is the measure of an interior angle
Oh
Okay
So central angle = 54.1
@ThisGirlPretty please do you can help me making more understandably
interior = 129
128,6
128.6 + x = exterior angle?
|dw:1537392880359:dw|
360 - 128,6 = exterior angle measure
ok. ?
okay
precis ?
231.4
231,4
yes so thia is the exterior angle maesure of a 7 side regular polygon
pixel do you understand it now sure ?
so 231,4 is the final answer
yes bc. than you assume this 231,4 with this 128,6 you get 360 degrees
Yes Thank
try see it in this way - this point A let being the central point of a circle you know that this drawn part has 128,6 degrees so what reamained till 360 degrees bc. you know that a circle has 360 degrees so in this way will get easy the measure of an extreior angle with 360-128,46 yes ?
@ThisGirlPretty please do you understand this way ?
pixel questions ?
one more sorry i had to do something
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