Ayamsen

A scale drawing is a drawing that represents something in real life. The scale gives the relationship between the lengths on the drawing and the real-life lengths. you can write a scale in three ways: 1.using the word represents for example, 1 cm represents 100 cm 2.using the word to ,for example `1 to 100,     3. using a ratio sign ,for example ,1:100
 when you write a scale using to or the ratio sign,the number you use must be in the same units.so you must write the scale'1 cm represent 10 cm 'as either '1 to 1000or '1:1000. the scale '1 to 10'or 1:10' means that every centimetre on the drawing represents 10 centimetres in real life. To change a length on a drawing to a length in real life, multiply by the scale.
To cgange a length in real life to a length on a drawing. divide by the scale.

A quadrilateral is a 2D shape with four straight sides. A diagonal is a line that joins to opposite corners of quadrilateral. Every quadrilateral has two diagonals. The diagonals always cut (cross) each other.