I am trying to go through a tutorial on how to model a Lamborghini aventador and I don't see the option for planes when I click reference geometry. How do I fix that? Thank you in advance.
When viewing the Insert > Reference Geometry menu, click on the Customize Menu link at the bottom and make sure all the options are selected.
Another possibility is to right-mouse-click on any toolbar and select Customize > Customization and select both Show All buttons.
Mohamed, I am pretty sure this is because you are editing a sketch- look for some of the clues in my image below- and if you have the icons in the upper right corner, exit the sketch and those extra reference geometry options will be available again:
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