Question

Please solve 3 and 4 tomorrow is exam. I am in 7 th standard

Answer 1

3)∆PQR is congruence to∆ABC. PQ=AC,AB=QR,angleA=angle Q. By ASA congruence rule both triangles are congruent. 4)∆AOC and∆BOD are congruent. angle AOC=angleBOD, (vertically opposite angles),OC=OD,OA=OB.

Answer 2

3) in ΔPQR and ΔABC,

PQ = AC (both 9cm)
QR = AB (both 8 cm)
angle Q = angle A (both 85 degree)

thus,
ΔPQR is congruent to ΔABC, by SAS congruence rule.

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4)in triangles COA and  BOD,

CO = OD (given mid point)
AO = OB (given mid point)
 angle COA = angle BOD(vertically opp.angles)

thus,
ΔCOA  is congruent to ΔBOD, by SAS congruence rule.


hope it helps!!!!