a) Where does the circumcentre lie in the case of
(i) An acute-angled triangle.
(ii) An obtuse-angled triangle.
(iii) A right-angled triangle.
b) Where does the orthocentre lie in the case of
(i) An acute-angled triangle.
(ii) An obtuse-angled triangle.
(iii) A right-angled triangle

Fill in the blanks:

In the triangle ABC,
(i) The angle bisector is _______
(ii) The altitude is _______
(iii) The median is ______

In right triangle ABC, what is the length of altitude drawn from the vertex A to BC?

In triangle XYZ, YM is the angle bisector of ㄥY and ㄥY= is 100^o
Find ㄥXYM and  ㄥZYM.

In triangle PQR, PS is a median and QS = 3.5 cm, then find QR?