Question

give the answer of this question I will put another question next​

Answer 1

Answer:

Step-by-step explanation:

1.Let the sides be 2x,3x,5x,8x

then ,angles of a quadrilateral is 360 degrees

so 2x+3x+5x+8x=360

18x=360

x=360/18

x=20

Angles =2*20=40 degrees

3*20=60 degrees

5*20=100 degrees

8*20=160 degrees

The other question :

To find the value of an internal angle within this polygon, we can just multiply the number of triangles by 180 ° , then divide by the number of internal angles, which is nine.

So the interior angle of a 9 -sided polygon is 140 ° .

Answer 2

3). 2:3:5:8=2x,3x,5x,8x

sum of all angles of a quadrilateral = 360

=>2x+3x+5x+8x = 360

=>18x=360

=>x=360/18=20

Therefore,

Angles

= 2×20=40,3×20=60,5×20=100,8×20=160

4). Formula for sum of angle

= (number of sides - 2)180

given,

number of sides = 9

=>sum of angles = (9-2)180

=7×180=1260

=>Angle=1260/9=140

HOPE IT HELPS YOU.

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