Classification of triangles based on sides

Q. How many medians at most can a triangle have?

1. 1
2. 2
3. 3
4. 6

Q. ∆ ABC is isosceles with AB = AC. AD is the altitude from A on BC.
(i) Is ∆ ABD ≅ ACD?
(ii) State the pairs of matching parts you have used to answer (i).
(ii) Is it true to say that BD = DC?

Q.

In ΔPQR, D is the mid-point of .

is __________.

PD is __________.

Is QM = MR?

Q. Draw an acute-angled triangle, ∆CID and its three altitudes.

Q. In the given figure , BD and CE are altitudes on side AC and AB respectively. Is triangle BCD congruent to triangle CBE ?

Q. the altitude of atriangle is 12 , 15 , 20 .then find the largest angle