Christian Mattes, 15, center, explains to his teacher Leslie Peoples how he came up with an answer to a geometry problem at Mesa Verde High School on May 23, 2016.
Christian Mattes, 15, center, explains to his teacher Leslie Peoples how he came up with an answer to a geometry problem at Mesa Verde High School on May 23, 2016. Hector Amezcua The Sacramento Bee file
Christian Mattes, 15, center, explains to his teacher Leslie Peoples how he came up with an answer to a geometry problem at Mesa Verde High School on May 23, 2016. Hector Amezcua The Sacramento Bee file