Triangle abc is shown below
the flow chart with missing reason proves the measures of the interior angles of triangle abc total 180.
which reason can be used to fill in the numbered blank space? which reason can be used to fill in the numbered blank space?
angle addition postulate
definition of complementary angle
definition of supplementary angles
substitution

Asix-sided die of unknown bias is rolled 20 times, and the number 3 comes up 6 times. in the next three rounds (the die is rolled 20 times in each round), the number 3 comes up 6 times, 5 times, and 7 times. the experimental probability of rolling a 3 is 10 %, which is approximately % more than its theoretical probability. (round off your answers to the nearest integer.)