meaning fullform of CPCT

in rd sharma

pg no.10.72, mcq test ques.19

why angle "b" is equal to angle "a" ?

please give the reasons for the answers of the true/false questions in pg.no.10.52 especially q.no.(iv)-(vii)

let the line segments ab and cd intersect at o in such a way that oa = od and ob=oc prove that ac = bd but ac may not be parallel to bd

prove that the medians of a eqilateral triangle is equalprove thaghasdgfghehppppjbfa

• prove that the medians of a eqilateral triangle are equal

QUESTION NO. 33 SAMPLE PAPER 1 R.S.A.GGARWAL

show that all the medians of an equilateral triangle are equal without reffering to any link plzzz... fast bcoz i cant understand the rd sharma solution of this sum by meritnation.com

rd sharma pg- 10.71 q no. 16

how ANGLE FCA = ANGLE DBA ?

how are they same exterior angles?

i would suggest u guys that there should be questions of rd sharma too as i dnt hve rd sharma for class ninth and i had to practice the sums of it too...pls if it is possible do so...:)

In Chapter congruent triangles, page 10.12, Question no. 3 in the text book solutions (of RD Sharma book) provided by meritnation, the solution is given as:

It is given that

PQRS is a square and SRT is an equlateral triangle.

We have to prove that

1)PT = QT 2) Angle TQR = 15*

But in the solution only 1) PT=QT is proven how to prove that 2) Angle TQR = 15*

Please answer fast.

In RD Sharma textbook solutions of chapter 10 ie congruent triangles the question no 3 in page 10.12, the question is to prove 1. PT = QT and

2. angle TQR = 15*

But the solution is only given for 1. but not for 2. how to prove 2. ? ie angle TQR = 15* ?

pls answer fast

prove that the sum of three altitudes of a triangle is less than the sum of its sides

please reply for my question that where are the videos of rd sharma solutions

if all the medians of a triangle are equal then prove that the triangle is an equilaterl

If two isosceles triangles have a common base, the line joining their vertises bisect them at right angles.