Whoever with 3 and 4 gets brainliest answer and 10 points : )

Mean: The average or the center of the value. To find this, you add up all the numbers and divide by how many numbers there are. 
Example: 3, 4, 5
3+4+5 = 12. 
There are 3 numbers.

12/3 = 4. The mean is 4

Median: Median means the middle value. You place the numbers in order and locate the middle value. 

Example: 5, 4, 3 -> 3,/ 4,/ 5. Middle number 4.

Mode: Place the numbers in order then count how much each number appears. The number that appears the most repeatedly would be the mode.

Example: 3, 4, 4, 4, 5, 5. 

The mode would be 4.

Range: Locate the highest and the lowest values of the given set and subtract the smallest to the largest.

Do you know where to start now?

“exterior angles of triangles. an exterior (or external) angle is the angle between one side of a triangle and the extension of an adjacent side. try this drag the orange dots on any vertex to reshape the triangle.” look to get to the answer i explained what it means and other things i hope it you .