Step 1. Download the fonts from: http://font.ubuntu.com/
Step 2. Unzip the fonts and rename them to your liking I renamed mine to "Ubuntu"
Step 3 Open Terminal and type the following:
sudo cp -R Ubuntu /usr/share/fonts/
Step 4. Open gnome-tweak-tool and select "Fonts"
Step 5. From here you can change whatever font category you wish to "Ubuntu"
If you didn't have gnome-tweak-tool installed you can do so by opening Terminal and type the following:
sudo yum -y install gnome-tweak-tool