FunnySkittle
05.05.2020 •
Mathematics
The sum of 50 numbers is 423. Which of these 8 numbers are above the average for all 50 numbers?
13, 4, 10, 7, 1, 16, 6, 11.
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Ответ:
- D) SAS is the right answer.
Explanation:-
Given : Two triangles ΔABC and ΔCDA in which BC=AD
∠DAC=∠ACD
To prove:- ΔABC ≅ ΔCDA
Proof:-In ΔABC and ΔCDA
BC=AD [given]
∠DAC=∠ACD [given]
AC=AC [common]
⇒ΔABC ≅ ΔCDA by SAS postulate
SAS (Side-Angle-Side) postulate states that if two angles and its included side of a triangle is equal to the two angles and its included side of the other triangle, then the triangles is said to be congruent.