Altitudes, Medians, Perpendicular Bisectors, Angle Bisectors

What type of lines create a point 2/3 the distance from the vertex and 1/3 from the side?

• median

• perpendicular bisector

• altitude

• angle bisector

A segment from the vertex of a triangle to the opp. side that splits the angle into 2 equal angles.

• incenter

• angle bisector

• perpendicular bisector

• circumcenter

what type of lines are shown:

• perpendicular bisector

• angle bisectors

• altitudes

• medians

what type of lines are shown:

• perpendicular bisectors

• angle bisectors

• altitudes

• medians

Which line is an angle bisector?

• XY

• BY

• AZ

• XC

Which line is a perpendicular bisector?

• XY

• BY

• AZ

• XC

Which two types of lines only meet inside the triangle?

• Perpendicular bisectors and angle bisectors

• medians and altitudes

• medians and angle bisectors

• perpendicular bisectors and altitudes

What information are you missing from FG to KNOW that it is a perpendicular bisector?

• congruent angle markings

• congruent side markings

• The right angle

• nothing

Triangle ABC has a median of AD where the centroid is labeled Y.  If AY = 18, find the length of YD and AD in that order.

• 6 and 12

• 9 and 27

• 36 and 54

• 18 and 36

Triangle ABC has a median of BE where Y is the centroid. BE = 30, find the length of BY and YE in that order

• 15 and 45

• 45 and 15

• 10 and 20

• 20 and 10