△ABC and △PQR are shown in the adjoining figures. The measure of ∠C is :
The corresponding sides of △ABC and △PQR are in the ratio 3 : 5. AD⊥BC and PS⊥QR as shown in the following figures :
State basic proportionality theorem. Use it to prove the following : If three parallel lines l, m, n are intersected by transversals q and s as shown in the adjoining figure, then AB/BC = DE/EF.
If in two triangles △ DEF and △ PQR, ∠ D = ∠ Q and ∠ R = ∠ E, then which of the following is not true ?
In the given figure, in △ ABC, AD ⊥ BC and ∠ BAC = 90°. If BC = 16 cm and DC = 4 cm, then the value of x is :
In the given figure, PA, QB and RC are perpendicular to AC. If PA = x units, QB = y units and RC = z units, prove that 1/x + 1/z = 1/y.
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