Chamfer

Bevels the edges of the objects

Home tab > Modify panel > Chamfer

Distance option

Command line: Distance

1st Chamfer distance: 50

2nd Chamfer distance: 100

Select the vertical line

Hover the cursor to another line to preview the result

Pick the line to end the command

Continue to chamfer the bottom corner

Angle option

Start the Chamfer command

Command line: Angle

Specify chamfer length on the 1st line: 100

Specify chamfer angle from the 1st line: 15

Pick the vertical line

Hover the cursor to another line to previre the result

Click on the line to create the chamfer
Continue to create chamfer on the other corner

mEthod option

Start the Chamfer command

Command line: mEthod

Select Distance

Select the vertical line

Hover cursor on the other line to preview the result

Click to create the chamfer
Continue to chamfer another corner