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Introduction to Euclids Geometry — Maths STD 9 — Question

Gujarat BoardEnglish MediumSTD 9MathsIntroduction to Euclids Geometry2 Marks
Question
In the we have $\angle1=\angle2,\angle2=\angle3.$ Show that $\angle1=\angle=3$
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Answer

We have, $\angle1=\angle2$ [Given] $\angle2=\angle3$ [Given]
Now, by Euclid's axiom $1$, things which are equal to the same thing are equal to one other.
Hence, $\angle1=\angle3$

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