Unable to show image in ionic v3

I am unable to show image in my ionic application v3
below is my code

<ion-content style=" background-image: linear-gradient(#92c95c, #00a5d1);">
  <div style="text-align:center;    position: absolute;
  margin: 10% 45%;">
   <img src="images/icon/tetra_single.png"/>

My image location is


How to show image in the login page, please help me

path should be “assets/icon/tetra_single.png”

eventhough image is not showing