For the following questions answer them individually
The rocks having alumina or clay as their significant components are known as
Age of a tree may be ascertained by
The foundation in which a cantilever beam is provided to join two footings is called
A covering of concrete placed on the exposed top of an external wall is known as
The vertical members fixed between steps and handrail in a staircase is known as
The under surface of an arch is called
The vertical sides of a door and window openings provided in a wall are known as
The least count of a vernier scale is
The bearing of line XY is $$195^\circ$$and that of line ZY is $$255^\circ 45’$$. The included angle XYZ is