3
Solve the following examples. (any 4)
0
Find out by which test the following
triangles are congruent.
Z
X Х
of
Answers
Answered by
4
Explanation:
Consider △ABC,
By angle sum property, the sum of all the interior angles =180
o
∠A+∠B+∠C=180
o
⇒∠A=180
o
−50
o
−70
o
=60
o
Consider △DEF
∠F+∠E+∠D=180
o
⇒∠E=180
o
−70
o
−60
o
=50
o
∴∠A=∠D=60
o
∠B=∠E=50
o
∠C=∠F=70
o
and BC=FE
∴△ABC≅△FED .. [AAA
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