Advertisements
Advertisements
प्रश्न
In a triangle, ABC, AB = BC, AD is perpendicular to side BC and CE is perpendicular to side AB.
Prove that: AD = CE.
Advertisements
उत्तर

ln ΔABD and ΔCBE,
AB = BC ....(given)
AD ⊥ BC
CE ⊥ AB
To proved:
In ΔABD & ΔCBE
∠ ADB = ∠ CEB = 90° ....[Perpendiculars]
∠B = ∠B ....(Common angle)
AB = BC
∴ ΔABD ≅ ΔCBE ....(by AAS congruence)
⇒ AD = CE ...(c.p.c.t.c)
APPEARS IN
संबंधित प्रश्न
Which congruence criterion do you use in the following?
Given: ZX = RP
RQ = ZY
∠PRQ = ∠XZY
So, ΔPQR ≅ ΔXYZ

Which congruence criterion do you use in the following?
Given: EB = DB
AE = BC
∠A = ∠C = 90°
So, ΔABE ≅ ΔCDB

You want to show that ΔART ≅ ΔPEN,
If it is given that ∠T = ∠N and you are to use SAS criterion, you need to have
1) RT = and
2) PN =

The following figure shows a circle with center O.

If OP is perpendicular to AB, prove that AP = BP.
From the given diagram, in which ABCD is a parallelogram, ABL is a line segment and E is mid-point of BC.
Prove that:
(i) ΔDCE ≅ ΔLBE
(ii) AB = BL.
(iii) AL = 2DC
In the adjoining figure, QX and RX are the bisectors of the angles Q and R respectively of the triangle PQR.
If XS ⊥ QR and XT ⊥ PQ;
Prove that:
- ΔXTQ ≅ ΔXSQ.
- PX bisects angle P.
A point O is taken inside a rhombus ABCD such that its distance from the vertices B and D are equal. Show that AOC is a straight line.
In the following figure, OA = OC and AB = BC.
Prove that: ΔAOD≅ ΔCOD
In the following figure, ∠A = ∠C and AB = BC.
Prove that ΔABD ≅ ΔCBE. 
Which of the following is not a criterion for congruence of triangles?
