1.

Find x yandz in following paralleogram​

Answer»

ANSWER

∠PQR+ext.∠Q=180∘ [LINEAR PAIR]

∠PQR+80∘=180∘⇒∠PQR=100∘

        x+100∘=180∘ [SUPPLEMENTARY angles of PARALLELOGRAM]

                        x=80∘

In △PSR,Z=∠SRP [Alternate angles]

∴80∘+60∘+Z=180∘⇒Z=180∘−140∘=40∘

In △PQR,

40∘+y+100∘=80∘

        y=180∘−140∘=40∘



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