2. Which pairs of triangles are congruent by ASA congruence condition in Fig. 9.29? If
congruent, write the congruence of the two triangles in symbolic form.
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Answer:
According to ASA
first we will find angle X of Triangle XYX
X + Y + Z = 180°
X + 30° + 90° = 180°
X + 120° = 180°
X = 180° - 120°
X = 60°
Now, we can observe that
angle C = angle X ( both 60° )
angle Z = angle B ( both 90°)
XY = AC
So , hence proved by ASA
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