- What is Congruence
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- Triangle Congruence
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- Properties of Congurent trianngles
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- Different Criterion for Congruence of the triangles
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- How to Prove the congurence of Two Triangle
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- Inequality of Triangle
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- Important defination for Triangles
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- Solved Examples

Given below are Congruent Triangle Important questions

a. Concepts questions

b. Calculation problems

c. Multiple choice questions

d. Long answer questions

e. Fill in the blanks

a. Concepts questions

b. Calculation problems

c. Multiple choice questions

d. Long answer questions

e. Fill in the blanks

$ \Delta ABC \cong \Delta PQR$

- Side AC is congruent to ......
- Angle A is congruent to Angle .....
- Triangle ABC is ...... To Triangle ABC
- Side....... to equal to side QR
- The sum of the angles of A+B+C is equal to .......
- If $ ABC \cong XYZ$, Then PQR is ....... to XYZ
- If angle A is $60^0$ and angle B is $30^0$ then angle R is .......
- Angle P and Q in above cases would be ....... and ........

a. A triangle can be constructed only when the sum of any two sides is greater than the third side

b. The median of the equilateral triangle are unequal

c. In the right angle triangle having sides 5,4,3. The side having 5 is the hypotenuse

d. In a triangle, the greater angle has the larger side opposite to it

e. The sum of all the angles in a triangle is 180

f. If ABC?PQR then AC=PR

g. For an obtuse angled triangle, the circumcenter lies outside the triangle

h. AAA is the right condition for congruency

i. Each Angle of the equilateral triangle is 60

j. A triangle can have two right angles

k. A triangle can have all the angles greater than 60

L. A triangle cannot have all the angles less than 60

Solutions

All of the sides of this triangle are equal. What kind of a triangle is this?

a. Scalene

b.Equilateral

c. Isosceles

d. Right triangle

Solutions

Which is these are valid for two triangles to be congruent?

a. AAA

b. SSS

c. AAS

d. SSA

Solutions

Solutions

Download this assignment as pdf

Given below are the links of some of the reference books for class 9 Math.

- Mathematics for Class 9 by R D Sharma One of the best book for studying class 9 level mathematics. It has lot of problems to be solved.
- Secondary School Mathematics for Class 9 by R S Aggarwal This is also as good as R.D. Sharma. Either this or the book by R.D. Sharma will do. I find book R.S. Aggarwal little bit more challenging than the one by R.D. Sharma.
- Pearson IIT Foundation Series - Maths - Class 9 Buy this book if you want to challenge yourself further and want to prepare for JEE foundation.
- Pearson IIT Foundation Physics, Chemistry & Maths combo for Class 9 Only buy if you are prepared to study extra topics and want to take your studies a step further. You might need help to understand topics in these books.

You can use above books for extra knowledge and practicing different questions.

Class 9 Maths Class 9 Science

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