# Geometrical Constructions Class-8 RS Aggarwal ICSE Maths Goyal Brothers

Geometrical Constructions Class-8 RS Aggarwal ICSE Maths Goyal Brothers Prakashan Solutions Chapter-19. We provide step by step Solutions of Exercise / lesson-19 Geometrical Constructions  for ICSE Class-8  RS   Aggarwal  Maths.

Our Solutions contain all type Questions of Exe-19 A, Exe-19 B, with Notes to develop skill and confidence. Visit official Website CISCE for detail information about ICSE Board Class-8 Mathematics.

## Geometrical Constructions Class-8 RS Aggarwal ICSE Maths Goyal Brothers  Prakashan Solutions Chapter-19

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Notes on Geometrical Constructions

Exe-19 A,

Exe-19 B,

### on Geometrical Constructions

Construction” in Geometry means to draw shapes, angles or lines accurately. These constructions use only compass, straightedge (i.e. ruler) and a pencil. This is the “pure” form of geometric construction: no numbers involved.

In construction of quadrilaterals we will learn how to construct a quadrilateral. We know that a quadrilateral has ten parts in all: four sidesfour angles and two diagonals. To construct a quadrilateral, we shall need data about five specified parts of it.

Before talking about the construction of quadrilaterals, let us recall what a quadrilateral is. A quadrilateral is a polygon which has 4 vertices and 4 sides enclosing 4 angles. The sum of its interior angles is 360 degrees.

A quadrilateral, in general, has sides of different lengths and angles of different measures. However, squares, rectangles, etc. are special types of quadrilaterals with some of their sides and angles being equal. In this article, we will discuss the following construction of quadrilaterals

(i) 4 sides and 1 diagonal is given.

(ii) 3 sides and including 2 angles are given

(iii) 2 sides and three angles are given

### Tips of Constructions

1. Draw  rough figure with given measurement
2. You should know how to Draw a line bisector , perpendicular bisector and angle bisector
3. Idea of constructing angle of 30,45, 60, 75, 90, 105 degree without compass
4. Learn the properties of various regular Quadrilaterals
5. Then solve example of your text book on Geometrical Constructions
6. after regular practice you can draw quadrilaterals

### Exe-19 B, Geometrical Constructions Class-8 RS Aggarwal ICSE Maths Goyal Brothers Prakashan Solutions

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