Observe the information shown in pairs of triangles given below. State the test by which the two triangles are congruent. Write the remaining congruent parts of the triangles.
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Solution
From the information shown in the figure, in △PTQ and △STR seg PT≅ seg ST ∠PTQ≅∠STR ...... (vertically opposite angles) seg PT≅ seg ST ∴△PTQ≅△STR (By SAS rule) ∴∠TPQ≅∠TSR and ∠TQP≅∠TRS .
(corresponding angles of congruent triangles) seg PQ≅ seg SR
( corresponding sides of congruent triangles)