1. One mark exercise problems I

1. Two similar triangles will always have matchingacuterightobtuse angles.

 

2. If in triangles \(PQR\) and \(XYZ\), \(\frac{PQ}{XY} = \frac{QR}{YZ}\) then they will be similar if \(\angle P = \angle Z\)\(\angle Q = \angle X\)\(\angle P = \angle Y\)\(\angle Q = \angle Y\).

 

3. A flag pole \(15 \ m\) high casts a shadow of \(3 \ m\) at \(10 \ a.m\). The shadow cast by a building at the same time is \(18.6 \ m\). The height of the building is 90 m91 m92 m93 m.