You can use SAS, or Side Angle Side. Because BC equals EC and AC equals DC, you can get two sides. Also, angle BCA and DCE have the same angle measurement, so you can conclude, using SAS, that BA equals to ED. Also, you can also prove that these two triangles are congruent and that all of the angles are the same as well because all of the side lengths are equal.
Answer:
The lower quartile value is the median of the lower half of the data. The upper quartile value is the median of the upper half of the data.
Answer:
its the mean for the data, its showing you the average studying time
