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How can proving of angles be made easier

Posted by Vimal Agrawal 5 years, 1 month ago

CBSE > Class 09 > Mathematics

0 answers

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What are corresponding angles

Posted by Swastika Sheel Srivastava 5 years, 1 month ago

CBSE > Class 09 > Mathematics

1 answers

Divya Sheoran 5 years, 1 month ago

The angles which occupy the same relative position at each intersection where a straight line crosses two others. If the two lines are parallel, the corresponding angles are equal.

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Proov Vertically opposite angles are equal

Posted by Imran Mansoorie 5 years, 1 month ago

CBSE > Class 09 > Mathematics

1 answers

Gaurav Seth 5 years, 1 month ago

Given two lines AB and CD intersect each other at the point O.
To prove: ∠1 = ∠3 and ∠2 = ∠4
Proof:
From the figure, ∠1 + ∠2 = 180° [Linear pair] → (1)
∠2 + ∠3 = 180° [Linear pair] → (2)
From (1) and (2), we get
∠1 + ∠2 = ∠2 + ∠3
∴ ∠1 = ∠3
Similarly, we can prove ∠2 = ∠4 also.

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Sonia classroom is squared-shaped. Each side of it is 5m long. She takes a round of it along the walls. How far does she walk

Posted by Ishika I 5 years, 1 month ago

CBSE > Class 09 > Mathematics

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How to rationalise

Posted by Aryan Gujjar 5 years, 1 month ago

CBSE > Class 09 > Mathematics

1 answers

Shivanshu Rajput 5 years, 1 month ago

When you rationalise the denominator should be multiply both side but signs are changed but it should be used when the denominator is in square root.

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a triangle and a parallelogram have same base and same area if the side of a triangle are 26 28 cm and 30 cm and the parallelogram stand on the base 28 cm find the height of the parallelogram

Posted by Ayman Ahmad 5 years, 1 month ago

CBSE > Class 09 > Mathematics

1 answers

Gaurav Seth 5 years, 1 month ago

For triangle
a = 26 cm
b = 28 cm
c = 30 cm

Area of the triangle

Let the height of the parallelogram be h cm.
Then, area of the parallelogram
= Base x Height = 28 x h cm²
According to the question,

Hence, the height of the parallelogram is 12 cm.

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Show that (2+root5) (2-root5) (root5-root3)(5-root3) is a rational number

Posted by Lenovo Bikaner 5 years, 1 month ago

CBSE > Class 09 > Mathematics

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K ki value

Posted by Ankit Kumar 5 years, 1 month ago

CBSE > Class 09 > Mathematics

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How to construct an angle of 135°?

Posted by Vaibhav Sharma 5 years, 1 month ago

CBSE > Class 09 > Mathematics

0 answers

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a+b ka sqare

Posted by Deepak Papa 5 years, 1 month ago

CBSE > Class 09 > Mathematics

5 answers

Komal Pankhudi 5 years, 1 month ago

a²+2ab+b²

1Thank You

Gourav Olla 5 years, 1 month ago

a2+b2+2ab

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Rajnish Kumar Singh 5 years, 1 month ago

a2+b2+2ab

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Mukil Sharma 5 years, 1 month ago

(x+4) (x-6)

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Siddharth Tiwari 5 years, 1 month ago

a2+b2+2ab

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ABC is an isosceles triangle in which AB = AC. AD bisect exterior angle PAC and CD|| AB.show that

Posted by Kritika Yaduvanshi 5 years, 1 month ago

CBSE > Class 09 > Mathematics

0 answers

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In figure,oa=od and angle 1=angle 2.prove that triangle ocb is isosceles triangle

Posted by Lalita Barse 5 years, 1 month ago

CBSE > Class 09 > Mathematics

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An umbrella is made by sitching 10 triangular pieces of clothes of two different colours , each piece measuring 20cm,50cm and 50cm . How much cloth of each colour is required for the umbrella ?

Posted by Vishwas Kashyap 5 years, 1 month ago

CBSE > Class 09 > Mathematics

1 answers

Ritu Yadav 5 years, 1 month ago

a=20cm b=50cm c=50cm s=a+b+c/2=120/2=60cm Area of triangle =√s(s-a) (s-b) (s-c) =√60(60-20)(60-50)(60-50) =√60×40×10×10 =√2×2×3×5×2×2×2×5×2×5×2×5 =2×5×2×2×5 √2×3 =200√6 =5×(200√6) =10000√6cm²

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What is prime numbers.. ????

Posted by Nitesh Sharma 5 years, 1 month ago

CBSE > Class 09 > Mathematics

1 answers

Anurag Singh 5 years, 1 month ago

The number which can divide by itself

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Angel Q>angle R m is midpoint on QR pm bisecter of angle NPM=1/2(ANGLEQ-ANGLER

Posted by Nisha Nagesh 5 years, 1 month ago

CBSE > Class 09 > Mathematics

0 answers

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What is theorem?

Posted by Jitendra Paswan 5 years, 1 month ago

CBSE > Class 09 > Mathematics

0 answers

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Factorise X^3+6x^2+11x+6 with steps

Posted by Kitchen Counter21 5 years, 1 month ago

CBSE > Class 09 > Mathematics

0 answers

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All amles name for ex it form Z,U,Fetc

Posted by Naman Aggarwal 5 years, 1 month ago

CBSE > Class 09 > Mathematics

0 answers

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What is mid point theorem

Posted by Rajneesh Payal 5 years, 1 month ago

CBSE > Class 09 > Mathematics

3 answers

Dharmendra Kumar Yadav 5 years, 1 month ago

Xaise

2Thank You

Pradeep Jaju 5 years, 1 month ago

Midpoint theorem of a triangle states that a line joining the midpoints of two sides of a triangle is parallel to the third side of triangle and is half to the length of the third side..hope it helps.... ???

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Pradeep Jaju 5 years, 1 month ago

I don't know

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Exercise 12.1 question 3 write now answer

Posted by Rajesh Kumar 5 years, 1 month ago

CBSE > Class 09 > Mathematics