Radius/ Arc Round Slot

I'm assuming your origin is in the center, as shown, the +X-axis is pointing to the right, and the +Y-axis is pointing up.

The left slot R.1719 radius will have a center at (x, y, z) = (-1.125*cos(67.5°), -1.125*sin(67.5°), 0) ≈ (-0.4305, -1.0394, 0). Use an angle vector of <i, j, k> = <cos(67.5°), sin(67.5°), 0> ≈ <0.38268, 0.92388, 0>. Start angle = 0. End angle = 180. Measure CCW. The start and end angles can be offset (inward) slightly to avoid hitting the tangent point.

The right slot R.1719 radius will have a center at (x, y, z) = (1.125*cos(67.5°), -1.125*sin(67.5°), 0) ≈ (0.4305, -1.0394, 0). Use an angle vector of <i, j, k> = <cos(67.5°), -sin(67.5°), 0> ≈ <0.38268, -0.92388, 0>. Start angle = 0. End angle = 180. Measure CCW. The start and end angles can be offset (inward) slightly to avoid hitting the tangent point.

The inner R.9531 radius will have a center at (x, y, z) = (0, 0, 0). Use an angle vector of <i, j, k> = <-cos(67.5°), -sin(67.5°), 0> ≈ <-0.38268, -0.92388, 0>. Start angle = 0. End angle = 45°. Measure CCW.

The outer R1.2969 radius will have a center at (x, y, z) = (0, 0, 0). Use an angle vector of <i, j, k> = <-cos(67.5°), -sin(67.5°), 0> ≈ <-0.38268, -0.92388, 0>. Start angle = 0. End angle = 45°. Measure CCW.

Thank you for this information but honestly, I am unsure what to do with it. 

Basically, what I've been doing is taking hits and letting the measure feature do its thing.

Along with using auto features for holes, counterbores, etc.

I tried to just measure it using hits and it turns it into a straight round slot.

I apologize for the lack of knowledge; I also thank you for the reply. 

You would put these XYZ and angle values into a circle auto feature.

Insert > Feature > Auto > Circle

CCW is counterclockwise measurement path

As Jacob said, first 2 circles start and end angles can be offset inward to avoid hitting the tangent points

For these 2 circles, increase start angle, decrease end angle to move them inward. You can play around and see what feels right

CR1        =FEAT/CONTACT/CIRCLE/DEFAULT,CARTESIAN,IN,LEAST_SQR
            THEO/<-0.4305,-1.0394,0>,<0,0,1>,0.3438
            ACTL/<-0.4305,-1.0394,0>,<0,0,1>,0.3438
            TARG/<-0.4305,-1.0394,0>,<0,0,1>
            START ANG=0,END ANG=180
            ANGLE VEC=<0.3826803,0.9238808,0>
            DIRECTION=CCW
            SHOW FEATURE PARAMETERS=NO
            SHOW CONTACT PARAMETERS=NO
CR2        =FEAT/CONTACT/CIRCLE/DEFAULT,CARTESIAN,IN,LEAST_SQR
            THEO/<0.4305,-1.0394,0>,<0,0,1>,0.3438
            ACTL/<0.4305,-1.0394,0>,<0,0,1>,0.3438
            TARG/<0.4305,-1.0394,0>,<0,0,1>
            START ANG=0,END ANG=180
            ANGLE VEC=<0.3826803,-0.9238808,0>
            DIRECTION=CCW
            SHOW FEATURE PARAMETERS=NO
            SHOW CONTACT PARAMETERS=NO
CR3        =FEAT/CONTACT/CIRCLE/DEFAULT,CARTESIAN,IN,LEAST_SQR
            THEO/<0,0,0>,<0,0,1>,1.9062
            ACTL/<0,0,0>,<0,0,1>,1.9062
            TARG/<0,0,0>,<0,0,1>
            START ANG=0,END ANG=45
            ANGLE VEC=<-0.3826803,-0.9238808,0>
            DIRECTION=CCW
            SHOW FEATURE PARAMETERS=NO
            SHOW CONTACT PARAMETERS=NO
CR4        =FEAT/CONTACT/CIRCLE/DEFAULT,CARTESIAN,IN,LEAST_SQR
            THEO/<0,0,0>,<0,0,1>,2.5938
            ACTL/<0,0,0>,<0,0,1>,2.5938
            TARG/<0,0,0>,<0,0,1>
            START ANG=0,END ANG=45
            ANGLE VEC=<-0.3826803,-0.9238808,0>
            DIRECTION=CCW
            SHOW FEATURE PARAMETERS=NO
            SHOW CONTACT PARAMETERS=NO

Thank you for that, I now understand what I need to do.

I will give this a go and report back as time allows.

I appreciate everyone who chipped in to help! 

Do note, as Jacob said. This is assuming that the origin is at the center of the round slot, you'll need to manually align to that first if you haven't already. Or at the very least use a read point, with a readpoint alignment and place your probe in the center of that round slot as best as you can before executing one of the circles. This tells the machine where the part is relative to the probe tip

READ       =FEAT/POINT,CARTESIAN
            THEO/<0,0,0>,<0,0,1>
            ACTL/<0,0,0>,<0,0,1>
            READPOINT/
READ_ALN   =ALIGNMENT/START,RECALL:STARTUP,LIST=YES
              ALIGNMENT/TRANS,XAXIS,READ
              ALIGNMENT/TRANS,YAXIS,READ
              ALIGNMENT/TRANS,ZAXIS,READ
            ALIGNMENT/END

Type read in the Edit window to generate a read point and change the theo/actual XYZ to 0,0,0 and the appropriate vector(IJK) to 0,0,1 if in Z+ for example