Explanation

An equilateral triangle has all three sides and angles equal (each angle = 60°).

It is commonly used in geometry and structural design for uniform load distribution.

A scalene triangle has no equal sides and no equal angles.

All sides and angles are of different lengths and measures.

Explanation

A frog is the shallow depression on one face of a brick.

It reduces brick weight and provides a key for mortar to bond.

Explanation

English bond alternates headers and stretchers in each course, providing maximum strength.

Commonly used in load-bearing walls due to its durability and stability.

Explanation

Dewatering is the process of removing water from foundations, pits, or trenches.

It ensures a dry work area and prevents soil instability during construction.

Explanation

The SI prefix Tera (T) represents 10¹².

Commonly used in measurements like terabytes (TB).

Explanation

Glass does not have a sharp melting point but softens over a range above 1000 °C.

Actual softening temperature depends on the type and composition of glass.

Explanation

Oil paint is mainly composed of a base (gives color), vehicle (binder), and thinner (controls viscosity).

These components ensure proper application, durability, and finish.

Explanation

A dumpy level consists of a telescope with three horizontal cross hairs.

It is used for leveling work to determine differences in elevation.

Explanation

According to Ohm’s Law, current equals voltage divided by resistance.

Unit of current is ampere (A).

Explanation

Ruts are grooves or depressions formed on road surfaces due to repeated vehicular loads.

They affect riding quality and can cause water accumulation, leading to accidents.