HARD
9th CBSE
IMPORTANT
Earn 100

AB is a line segment. P and Q are points on opposite sides of AB such that each of them is equidistant from the points A and B (See figure). Show that the line PQ is the perpendicular bisector of AB.

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Important Questions on Congruent Triangles

HARD
9th CBSE
IMPORTANT

BD and CE are bisectors of B and C of an isosceles ΔABC with AB=AC. Prove that BD=CE.

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MEDIUM
9th CBSE
IMPORTANT

In the given figure, it is given that RT=TS,1=22 and 4=23.  Prove that ΔRBTΔSAT.

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MEDIUM
9th CBSE
IMPORTANT
Two lines AB and CD intersect at O such that BC is equal and parallel to AD. Prove that the lines AB and CD bisect at O.
MEDIUM
9th CBSE
IMPORTANT
In two right triangles one side and an acute angle of one are equal to the corresponding side and angle of the other. Prove that the triangles are congruent.
MEDIUM
9th CBSE
IMPORTANT
If the bisector of the exterior vertical angle of a triangle be parallel to the base. Show that the triangle is isosceles.
MEDIUM
9th CBSE
IMPORTANT
In an isosceles triangle, if the vertex angle is twice the sum of the base angles, calculate the angles of the triangle.
MEDIUM
9th CBSE
IMPORTANT
Prove that each angle of an equilateral triangle is 60°.
MEDIUM
9th CBSE
IMPORTANT
Angles A, B, C of a triangle ABC are equal to each other. Prove that ABC is equilateral.