A lot of work.. Please help /: (Attachment)

Question

anonymous · Answer

attachment

anonymous · Answer

um, have you tried any of this at all?

anonymous · Answer

I take it that you haven't...

aravindg · Answer

OS is not for solving ur hwork qns from someone first understand that

aravindg · Answer

i would have been glad to help if u asked a specific qn ...bt this i wont answer

dumbcow · Answer

ok i am not going to answer all of these obviously...but i am willing to help you
here are some tips and rules that will help you

the centroid is where all the medians of a triangle meet
 - the median is a line that goes from a vertex to midpoint of opposite 
the distance from midpoint to centroid is 2/3 length of median
|dw:1335857052106:dw|

bisector mean cut in half
perpendicular means intersect at right angle
  -so perpendicular bisector must BOTH make right angle and cut line segment in half

All angles of a triangle add up to 180
obtuse triangle has ONE obtuse angle
acute triangle has ALL acute angles

scalene triangle has all different sides
isosceles triangle has 2 equal sides
equilateral triangle has ALL equal sides

good luck... please ask if you need any clarification