Textbook 2F.15: s-character and bond angle

[Elena Chen 2E]

"Noting that the bond angle of an sp3 hybridized atom is 109.58 and that of an sp2 hybridized atom is 1208, do you expect the bond angle between two hybrid orbitals to increase or decrease as the s-character of the hybrids is increased?"

The answer key says that the bond angle increases as the s-character increases. Can someone explain why this is?
Thanks!

[Hazelle Gunawan 3G]

In this case the s-character increases as the p-character decreases, so increasing s-character would cause regions of electron density to decrease. Because an sp2 orbital has less regions of e- density than an sp3 orbital, the bond angles increase. Hope that helps!

[Karen Elrayes 1L]

What is meant by s and p character?

[Karen Elrayes 1L]

would an explanation be that s orbital is lower energy than p orbital so if s character of the hybrids increased then the energy would decrease meaning a decrease of electron density or the space the electron occupies has decreased causing an increase in bond angles?

[Jacquelyn Challis 2B]

Does s & p character just mean how many s & p orbitals there are? like p character would be increasing from sp to sp2?