# Quadrilateral Area, Formula, Types, Properties And Examples

## Quadrilateral Area, Formula, Types, & Examples

A quadrilateral is a 2-dimensional shape containing 4 sides. Quad means four and hence the name quadrilateral is given to the closed shapes with four sides. There are many types of quadrilaterals, each having its own properties and formula of area. We are providing you with the quadrilateral area, formula, types and its properties along with the solved questions.

Quadrilaterals can be of different types with varying properties. Each of the quadrilateral mentioned below has 4 sides and 4 angles. The types of quadrilaterals that we experience in our daily lives include the following:

1. Parallelogram
2. Rectangle
3. Rhombus
4. Squares
5. Trapezium
6. Kite

• The total sum of the interior angles of a quadrilateral equals 360.
• Every quadrilateral contains 4 sides, 4 angles and 4 vertexes.
• Two pairs of adjacent angles of a quadrilateral sum up to 180 degrees.
Parallelogram
• Opposite sides are equal & parallel
• Opposite angles are equal
• Diagonals bisect each other, but not equal.
Rectangle
• Opposite sides are equal
• Diagonals bisect each other and are equal.
• Each vertex angle is of 90 degrees
Rhombus
• All sides are equal & Parallel.
• Diagonals bisect each other at 90 degrees.
Square
• All sides are equal.
• Diagonals are equal & bisect each other at 90 degrees.
• Each vertex angle is of 90 degrees
Trapezium
• Two sides are parallel to each other.
• The diagonals of a trapezium bisect each other.

Example. In a || gm, the adjacent sides are 36 cm and 27 cm in length. If the distance between the longer sides is 12 cm, then the distance between the smaller sides is :
एक समांतर चतुर्भुज में, आसन्न भुजाएँ की लम्बाई 36 सेमी और 27 सेमी हैं. यदि लम्बी भुजाओं के बीच की दूरी 12 सेमी है, तो छोटी भुजाओं के बीच की दूरी क्या है?
(a) 12 cm
(b) 16 cm
(c) 14 cm
(d) 15 cm

Example.  ABCD is rhombus in which ∠ C = 60°, then AC : BD = ?

ABCD एक विषमकोण है जिसमें ∠ C = 60°, तो AC : BD = ?

(a) √3 : 1
(b) √3 : 2
(c) 3 : 1
(d) 3 : 2

Example.  ABCD is a square. M is the mid-point of AB and N is the mid-point of BC. DM and AN are joined and they meet at O. Then which of the following is correct?
ABCD एक वर्ग है. M, AB का मध्य-बिंदु है और N, BC का मध्य-बिंदु है. DM और AN जुड़े हुए हैं और वह O पर मिलते हैं. तो निम्नलिखित में से कौन सा सही है?
(a) OA : OM = 1 : 2
(b) AN = MD
(d) ∠AMD = ∠BAN

Example.  The parallel sides of a trapezium are in a ratio 2 : 3 and their shortest distance is 12 cm. If the area of the trapezium is 480 sq. cm., the length of the parallel sides is of length:
एक ट्रेपेज़ियम के समानांतर भुजा 2: 3 के अनुपात में हैं और उनकी सबसे कम दूरी 12 सेमी है। यदि ट्रेपेज़ियम का क्षेत्रफल 480 वर्ग सेमी है, तो समानांतर भुजा की लम्बी भुजा की लंबाई कितनी है?
(a) 56 cm
(b) 36 cm
(c) 42 cm
(d) 48 cm

Q1. Find the area of quadrilateral(in unit²) AFED =? If FE∥AC & DE∥AB. If area of ∆BFE = 16 unit² and Area of ∆DEC = 9 units²
यदि FE∥AC & DE∥AB. यदि ∆BFE का शेत्रफल 16 unit² है और ∆DEC का शेत्रफल 9 units² है तो चतुर्भुज AFED का शेत्रफल ( unit² में) ज्ञात करें.

(a) 12
(b) 36
(c) 14
(d) 24

Q2. A square and a rhombus have the same base and the rhombus is inclined at 30°. What is the ratio of the area of the square to the area of the rhombus :
एक वर्ग और एक विषमकोण का समान आधार है और विषमकोण 30 डिग्री पर झुका हुआ है. वर्ग के क्षेत्रफल का विषमकोण के क्षेत्रफल से अनुपात कितना है?
(a) √2 : 1
(b) 2 : 1
(c) 1 : 1
(d) 2 : √3

Q3. The lengths of the two diagonals of a rhombus are 6 cm and 8 cm. Find the length of its perimeter (in cm).
एक विषमकोण के दो विकर्णों की लंबाई 6 सेमी और 8 सेमी है. इसकी परिधि (सेमी में) की लंबाई ज्ञात कीजिए।
(a) 20
(b) 10
(c) 40
(d) 30

Q4. In equilateral ∆ABC, find the length of altitude(in cm) put from D to BC. If, DEFG is a square & side AB = 2 + √3 cm
समबाहु ∆ABC में, यदि, DEFG एक वर्ग और भुजा AB = 2 + √3 cm है. ऊँचाई (सेमी में) ज्ञात करें यदि D से BC पर हो

(a) 3 + √3
(b) (3 + √3)/2
(c) 1.5 + √3
(d) 3 – √3

Q5. What is the measure of an interior angle of a regular polygon of 10 sides?
10 पक्षों के एक नियमित बहुभुज के आंतरिक कोण का माप क्या है?
(a) 150
(b) 156
(c) 144
(d) 160

Q6. In the given figure, PQR is a triangle and quadrilateral ABCD is inscribed in it. QD = 2 cm, QC = 5 cm, CR = 3 cm, BR = 4 cm, PB = 6 cm, PA = 5 cm and AD = 3 cm. What is the area (in cm^2 ) of the quadrilateral ABCD?
दी गयी आकृति में, PQR एक त्रिभुज है और चतुर्भुज ABCD इसमें अंकित है. QD = 2 सेमी, QC = 5 सेमी, CR = 3 सेमी, BR = 4 सेमी, PB = 6 सेमी, PA = 5 सेमी और AD = 3 सेमी. चतुर्भुज ABCD का क्षेत्रफल (cm^2 में) क्या है?

(a) (23√21)/4
(b) (15√21)/4
(c) (17√21)/5
(d) (23√21)/5

Q7. If the diagonals of a quadrilateral bisect each other and are perpendicular, the quadrilateral is:
यदि एक चतुर्भुज के विकर्ण एक दूसरे को द्विविभाजित करते हैं और लंबवत हैं, तो चतुर्भुज क्या होगा?
(a) Rhombus / विषमकोण
(b) Rectangle / आयत
(c) Parallelogram / चतुर्भुज
(d) Trapezium / समलंब

Q8. In fig ABCD is a square and PQ is the diameter of circle with center C. Find ∠PQR = ?
आकृति में, ABCD एक वर्ग है और PQ केंद्र C के वृत्त का व्यास है. ∠PQR का मान ज्ञात करें.

(a) 50°
(b) 60°
(c) 30°
(d) 20°

Q9. Find area of quadrilateral ABCD below shown as a shaded region in given figure, if out of the three squares the middle one (viz. square BHDF) has an area of 36 units². (In units²)
नीचे दिए गए आकृति में एक छायांकित क्षेत्र के रूप में नीचे दिखाए गए चतुर्भुज ABCD का क्षेत्रफल ज्ञात करें, यदि तीन वर्गों में से मध्य (अर्थात वर्ग BHDF) का क्षेत्रफल 36 इकाई² है। (इकाइयों में)

(a) 36
(b) 54
(c) 16
(d) 25

Q10. In the given figure, ABCD is a square whose side is 4 cm. P is a point on the side AD. What is the minimum value (in cm) of BP + CP?
दी गयी आकृति में, ABCD एक वर्ग है जिसकी भुजा 4 सेमी है. P, AD भुजा पर एक बिंदु है. BP + CP का न्यूनतम मान (सेमी में) क्या है?

(a) 4√5
(b) 4√4
(c) 6√3
(d) 4√6

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