Angles. An angle measures the amount of turn. Names of Angles As the Angle Increases, the Name Changes:
By the time your baby is 12 months old she will probably use the words mama and dada and know exactly what she's saying. However, she may also still babble short sentences that sound like she's fluent in a foreign language!
1 Baby talk at 9 months. From 6-12 months babies start to understand words like 'bye-bye', especially if there's waving at the same time. They may also begin to use a wider range of consonant sounds and tones of voice.  Baby talk at 12 months.