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.