An instrument to construct straight lines is called a rule. It's often referred to as a ruler, but a ruler is someone who rules a country. A rule is a piece of wood, metal or plastic (usually showing measurements) that you can use to draw/construct straight lines.A straight edgeThe most common one is a ruler
the concept of lines and angles r used in our daily life. straight lines are in class rooms on the floor, door,window,zebra crossing on road side. where as angles are used in building constructions,inter connected with subjects like physics chemistry etc.types of angles are used in yoga position , games fields and so on
Most houses are built with walls parallel to each other.
Draw a point, and a long straight line through it. Put the centre of the compass over the point, with north on the compass (or zero degrees) on the line. Then draw a second line out from the point at 80 degrees on the compass. You'll then have a 80 degree angle between the lines. It's usually a trick that teachers decide to do on their pupils. A compass is what you use to find north and a pair of compasses is used to draw circles.
there are three methods: combination, substitution and decomposition.
A straight edge perhaps?
A straight edge or a ruler are used to construct straight lines.
A straight-edge
A straight edge or a rule are used to construct straight lines. Laser line setter, In some cases a plumb line
That's commonly known as a "straight edge".
An instrument to construct straight lines is called a rule. It's often referred to as a ruler, but a ruler is someone who rules a country. A rule is a piece of wood, metal or plastic (usually showing measurements) that you can use to draw/construct straight lines.A straight edgeThe most common one is a ruler
a pencil
COMPASS
Compass
ruler
In construction, all you need is a compass and a ruler.
It is "a pair of compasses" - usually called a compass.