Find MN , i need it please and thanks
1 answer:
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Answer:
4) d = 1
5) w = 11
6) q = 120
Step-by-step explanation:
<em>4)</em>
Adding 5 on both the sides ,
Dividing both the sides by 9 ,
<em>5)</em>
Substracting 6 from both the sides ,
Dividing both the sides by -3 ,
<em>6)</em>
Adding 19 on both the sides ,
Multiplying both the sides by 8 ,
Given that ∠B ≅ ∠C.
to prove that the sides AB = AC
This can be done by the method of contradiction.
If possible let AB =AC
Then either AB>AC or AB<AC
Case i: If AB>AC, then by triangle axiom, Angle C > angle B.
But since angle C = angle B, we get AB cannot be greater than AC
Case ii: If AB<AC, then by triangle axiom, Angle C < angle B.
But since angle C = angle B, we get AB cannot be less than AC
Conclusion:
Since AB cannot be greater than AC nor less than AC, we have only one possibility. that is AB =AC
Hence if angle B = angle C it follows that
AB = AC, and AB ≅ AC.