four centres

Question 1

centroid

Answer 1

made out of median
line that joins point -> midpoint of opposite side
makes medians 2:1

Question 2

median definition

Answer 2

point -> midpoint in opposite side

Question 3

median is for

Answer 3

centroid

Question 4

circumcentre is made out of

Answer 4

perpendicular bisectors
CAN LIE OUTSIDE
-> perpendicular line from midpoint of a side

Question 5

perpendicular bisectors

Answer 5

perpendicular line from midpoint of a side

Question 6

incentre is made out of

Answer 6

angle bisectors
-> mid point of line bisecting angles on other side

Question 7

orthocentre is made out of

Answer 7

altitudes -> perpendicular base -> angle of point (doesn’t have to be mid point of line)

Question 8

altitudes

Answer 8

perpendicular base -> angle of point (doesn’t have to be mid point of line)