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Drupady [299]
2 years ago
15

In the adjoining figure , APB and AQC are equilateral triangles. Prove that PC = BQ. ( Hint :

%20%5Ctriangle" id="TexFormula1" title=" \triangle" alt=" \triangle" align="absmiddle" class="latex-formula">APC = \triangleAQB, then PC = BQ)
~Thanks in advance ! ツ

Mathematics
2 answers:
just olya [345]2 years ago
6 0

Answer:

See Below.

Step-by-step explanation:

Statements:                                                           Reasons:

\displaystyle 1)\text{ } \Delta APB \text{ and } \Delta AQC \text{ are equilateral triangles}      Given

\displaystyle 2) \text{ } m \angle PAB = 60                                                     Definition of equilateral.

3)\text{ } m \angle QAC = 60                                                     Definition of equilateral.

4)\text{ } m\angle PAB = m\angle QAC                                          Substitution

5)\text{ } m\angle PAC=m\angle PAB+m\angle BAC                       Angle Addition

\displaystyle 6)\text{ } m\angle QAB=m\angle QAC+m\angle BAC                       Angle Addition

7)\text{ } m\angle QAB=m\angle PAB+m\angle BAC                       Substitution

\displaystyle 8)\text{ } m\angle PAC=m\angle QAB                                         Substitution

9)\text{ } PA=BA                                                          Definition of equilateral

10)\text{ } AC=AQ                                                        Definition of equilateral

\displaystyle 11)\text{ } \Delta PAC \cong \Delta BAQ                                            Side-Angle-Side Congruence*

\displaystyle 12)\text{ } PC=BQ                                                        CPCTC

* SAS Congruence:

PA = BA

∠PAC = ∠QAB

AC = AQ

Goshia [24]2 years ago
3 0
<h2>Answer:</h2>

<u>In ΔAPB and ΔAQC</u>,

PA = PB

anglePAC = angleQAB

AC = AQ

therefore, <u>ΔAPC </u><u>≅</u><u> ΔAQB by SAS congruency</u>.

So by CPCT,

PC = PQ. <u>proved</u>..

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