I am new in photoshop. I am trying to create a rounded rectangle similar to the one shown in "What out customers are saying" section. https://dribbble.com/shots/4655259-Hire-Experts-Get-your-job-done-V2/attachments/1051554
I have created a rounded rectangle on Illustrator and drew two lines. Now, I can't remove the unwanted parts using Eraser tool. Here is the screenshot:
The eraser tool is not working here. How can I remove the unwanted portion? Here
Here is the .ai file: https://drive.google.com/open?id=1-w9vT35OEglgVgZetaGcBHfoB_ns4HGR