If `AB, AC, AD,` and `AE` are parallel to a line `l`, then points `A, B, C, D` and `E` are collinear

If PA;PB;PC and PD are parallel to a line 1 then points P;A;B;C and D are collinear.

Write 'T' for true and 'F' for false in case of each of the following statements If points A,B,C are collinear and points C,D,E are collinear then the points A,B,C,D,E are collinear.

Prove that the points (a, b), (c, d) and (a-c, b-d) are collinear, if ad = bc.

ABC is an isosceles triangle in which AB=AC. If D and E are the mid-points of AB and AC respectively,prove that the points B,C,D and E are concylic.

ABC is an isosceles triangle in which AB=AC. If D and E are the mid-points of AB and AC respectively,prove that the points B,C,D and E are concyclic.

In the adjoining figure, ABC is a triangle in whcich AB=AC. If D and E are poitns on AB and AC respecrtively such that AD=AE, show that the points B,C,E and D are concyclic.

Two circle intersect in A and B and AC and AD are respectively the diameters of the circles.Prove that C,B,D are collinear.

In a triangle ABC , DE is parallel to BC where D and E are the points on AB and AC, respectively and AD = 4cm, DB = 8 cm, AE= 3 cm, Length of EC is: triangle ABC में, DE, BC के समांतर है जहाँ D और E क्रमशः AB और AC पर बिंदु ह, और AD = 4 सेमी , DB= 8 सेमी , AE = 3 सेमी , तो EC की लम्बाई है ?