Take three non-collinear points P,Q and R on a page of your note-book.Joint PQ,QR and RP.What figure do you get?Name the triangle.Also name:
the angle opposite to side PQ

Take three non-collinear points P,Q and R on a page of your note-book.Joint PQ,QR and RP.What figure do you get?Name the triangle.Also name: the side opposite to angle Q .

Take three non-collinear points P,Q and R on a page of your note-book.Joint PQ,QR and RP.What figure do you get?Name the triangle.Also name: the side opposite to vertex side QR.

Take three collinear points A,B,C on a page of your note-book.Join AB,BC and CA. Is the figure a triangle ?If not,why?

Construct a triangle PQR such that PQ = 2.5 , QR = 6cm and RP = 6.5 cm . Also name the kind of triangle drawn .

Let vec O A= vec a , hat O B=10 vec a+2 vec ba n d vec O C= vec b ,w h e r eO ,Aa n dC are non-collinear points. Let p denotes the areaof quadrilateral O A C B , and let q denote the area of parallelogram with O Aa n dO C as adjacent sides. If p=k q , then find kdot

Draw the images P' Q' R' of the points P,Q,R respectively in the line l . Join P'Q' R to form an angle P'Q'R .What can you say about the two angles anglePQR and angleP'Q'R

Let l be a line and P be a point not on l. Through P, draw a line m parallel to l. Now join P to any point Q on l. Choose any other point R on m. Through R, draw a line parallel to PQ. Let this meet lat S. What shape do the two sets of parallel lines enclose?

Let O be the origin and vec(OX) , vec(OY) , vec(OZ) be three unit vector in the directions of the sides vec(QR) , vec(RP),vec(PQ) respectively , of a triangle PQR. if the triangle PQR varies , then the manimum value of cos (P+Q) + cos(Q+R)+ cos (R+P) is

Let a, r, s, t be non-zero real numbers. Let P(at^(2),2at),Q(ar^(2),2ar)andS(as^(2),2as) be distinct points on the parabola y^(2)=4ax . Suppose that PQ is the focal chord and lines QR and PK are parallel, where K the point (2a,0). If st=1, then the tangent at P and the normal at S to the parabola meet at a point whose ordinate is