+0

# Calculate X plz

0
46
6
+332

Find X

May 3, 2020

#1
+111360
+2

This is a quadrilateral.....the  sum of its interior angles  = 360°

So

x + 2x  + 108 + 108  =  360

3x +216  =  360      subtract 216 from both sides

3x   =144     divide both sides by 3

x  = 48

May 3, 2020
#2
+656
+2

So do all sides of the quadrilateral add up to 360?

Learning is fun!!!

LuckyDucky  May 3, 2020
#3
+111360
+1

Not sides.....the sum of the interior angles.....

To see this

A square is a quadrilateral

Each interior angle =  90

So....the sum of the interior angles =  4(90)  =  360    !!!!

CPhill  May 3, 2020
#4
+1

Ducks, the total of the interior angles of any polygon is  (n – 2) • 180o  where n is the number of sides.

.

Guest May 3, 2020
edited by Guest  May 3, 2020
#5
+656
+2

Ahhh thaks!

LuckyDucky  May 3, 2020
#6
+51
+1

The angles in all quadrilaterals sum up to 360.

We do a little algebra to find x.

108 + 108 + 2x + x = 360

216 + 3x = 360

3x = 144

x = 48

Therefore my final answer for the value of x is 48

May 4, 2020