Question

if a varises bc and b varises ca, then show that c is a constant
​

Answer 1

Answer:

7th

Maths

Congruence of Triangles

Criteria for Triangle Congruence

In the given figure, it is ...

MATHS

In the given figure, it is given that RT=TS,∠1=2∠2 and ∠4=2∠3. Prove that ΔRBT≅ΔSAT.

1669804

MEDIUM

Share

ANSWER

In ΔRTS, we have

RT=ST

⇒∠TSR=∠TRS (i)

We have,

∠1=∠4 [Vertically opposite angles]

⇒2∠2=2∠3 [∵∠1=2∠2 and ∠4=2∠3 (given)]

⇒∠2=∠3 (ii)

Subtracting (ii) from (i), we get

∠TRS−∠2=∠TSR−∠3

⇒∠TRB=∠TSA (iii)

Thus, in triangles, RBT and SAT, we have

∠RTB=∠STA [Common]

RT=ST [Given]

and, ∠TRB=∠TSA [From (iii)]

So, by ASA congruence criterion, we obtain

ΔRBT≅ΔSAT

Answer 2

Step-by-step explanation:

hiii

..........

....

..