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Perimeter = 2 (Length + Breadth) = 2 (8 + 5) = 2 × 13 = 26 cm.Įxample 2: Find the area, perimeter, and length of diagonal of a square of side 6 cm. Solution: Length of the rectangle, a = 8 cmĪrea = Length (a) × Breadth (b) = (8 × 5) cm 2 = 40 cm 2. Some of the examples of 2d shapes are given below:Įxample 1: If the length and the breadth of a rectangle are 8 cm and 5 cm respectively, find its area and perimeter. It is a regular pentagon if all the sides and angles are equal. The sum of interior angles is 540 degrees.Ģ. The opposite sides of a rectangle are equal and parallel.ġ. As the opposite angles of a rectangle are equal, a rectangle is also a parallelogram.Ĥ. Each internal angle of a rectangle measures 90°.ģ. A rectangle is a quadrilateral with four equal internal angles.Ģ. It is a parallelogram with all four internal angles equal to 90° and adjacent sides equal in length.ġ. A square is a rectangle with its two adjacent sides equal.Ĥ.
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It is a rhombus with four equal angles (each angle equals 90°).ģ. A square is a quadrilateral with four equal sides and four equal internal angles.Ģ. The sum of the lengths of any two sides of a triangle is greater than the length of the third side. The measure of an external angle of a triangle is equal to the sum of the measures of the two internal opposite angles. The sum of all three external angles of a triangle is 360°, i.e. The sum of all three internal angles of a triangle is 180°, i.e. All chords of a circle equidistant from the centre of the circle are equal in length.ġ.
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The perpendicular drawn on any given chord of a circle from the centre of the circle bisects the chord into two equal halves.Ĥ. The diameter of a circle is the longest chord of the circle.ģ. Circles having equal radii are said to be congruent.Ģ. Some of the properties of 2D shapes are given below: 2D Shapesġ. Practice 6th CBSE Exam Questions Properties of 2D Shapes And based on the measurement of angles, there are three types of triangles i.e., acute, right and obtuse. Based on length, there are three types of triangles such as scalene, isosceles and equilateral. The triangles are differentiated based on length and measurement of angles. The sum of interior angles is 180 degrees. It consists of the angle formed between two sides of the triangle. Triangle: It is a polygon that consists of three edges and three vertices. (x-h) 2 + (y-k) 2 = r 2 Source: NCERT Textbook The formula of a circle is mentioned below: The real-life examples of a circle are rings, bangles, wheels, coins etc. The circle consists of different parts based on positions and properties such as annulus, arc, sector, segment, centre, chord, diameter, radius, secant and tangent. All the points in the plane are equidistant from a given point known as the centre. Let us discuss the types of 2D shapes in detail.Ĭircle: It is a 2d shape with a closed structure. Polygons have a closed structure with sides whereas, circle consists of a curved shape. We can say that all the 2D shapes are polygon except for circles. There are different types of 2D shapes such as circle, triangle, rectangle, pentagon, square etc.
2D COMMON PICTURE SHAPES PDF
Download NCERT Solutions for Class 9 Maths Chapter 8 PDF The angles of 2D shapes are measured in degree. 2D shapes are the polygon consisting of plane surface measured with length and width or length and height.