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Home /Doubts and Solutions/CBSE/Class 9/Mathematics/Triangles/Congruence Criteria Sas And Asa

Congruence Criteria Sas And Asa Free Doubts and Solutions

CBSE - IX - Mathematics - Triangles

ABCD is a rectangle.AD bisects angle B.Show that it is a square.

Asked by Vikas 31st January 2018, 12:32 PM
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CBSE - IX - Mathematics - Triangles

Asked by Topperlearning User 10th August 2017, 9:33 AM
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CBSE - IX - Mathematics - Triangles

Two line segments AC and BD intersect at their mid point O. Prove that AB = CD OA = OC....given

Asked by Topperlearning User 10th August 2017, 8:33 AM
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CBSE - IX - Mathematics - Triangles

Asked by Topperlearning User 10th August 2017, 8:33 AM
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CBSE - IX - Mathematics - Triangles

In triangle ABC, AD is a median. BL and CM are perpendiculars on the median (or the median extended). Prove that BL = CM.

Asked by Topperlearning User 10th August 2017, 8:32 AM
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CBSE - IX - Mathematics - Triangles

Two right triangles ABC and DEF right angled at B and E are of equal area and AB = DE. If A = 35o, find the measure of .

Asked by Topperlearning User 10th August 2017, 8:31 AM
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CBSE - IX - Mathematics - Triangles

In PQR, if PQ = QR and L, M and N are the mid points of the sides PQ, QR and RP respectively. Prove that LN = MN.

Asked by Topperlearning User 10th August 2017, 8:20 AM
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CBSE - IX - Mathematics - Triangles

q is the bisector of angle P and S is any point on q. SM and SN  are perpendiculars from S to the arms of angle P. Show that (i) PMS PNS (ii) SM = SN.

Asked by Topperlearning User 10th August 2017, 8:19 AM
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CBSE - IX - Mathematics - Triangles

In the figure, p  q. M is the mid point of the line segment AB. Prove that M is also the mid point of any line segment CD having its end points on p and q respectively.

Asked by Topperlearning User 10th August 2017, 8:18 AM
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CBSE - IX - Mathematics - Triangles

It is given that AB = EF, BC = DE, AB  BD and FE  CE. Prove that ABD FEC.

Asked by Topperlearning User 10th August 2017, 8:18 AM
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CBSE - IX - Mathematics - Triangles

AB is a line segment and line l is its perpendicular bisector. If a point P lies on l, show that P is equidistant from A and B.

Asked by Topperlearning User 10th August 2017, 8:15 AM
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CBSE - IX - Mathematics - Triangles

Asked by Topperlearning User 10th August 2017, 8:14 AM
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CBSE - IX - Mathematics - Triangles

Asked by Topperlearning User 10th August 2017, 8:13 AM
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CBSE - IX - Mathematics - Triangles

Asked by Topperlearning User 10th August 2017, 8:13 AM
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CBSE - IX - Mathematics - Triangles

Prove that the medians of an equilateral triangle are equal.

Asked by Topperlearning User 10th August 2017, 8:11 AM
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CBSE - IX - Mathematics - Triangles

Q) ABCD is a parallelogram,if the two diagonals are equal find the measure of angle ABC 

Asked by banerjee_milky 28th June 2017, 8:57 PM
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CBSE - IX - Mathematics - Triangles

Q) ABCD is a parallelogram,if the two diagonals are equal then prove that the measure of angle ABC=90 degree.

Asked by banerjee_milky 27th June 2017, 7:59 PM
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CBSE - IX - Mathematics - Triangles

If D is the midpoint of the hypotenuse AC of the right angled triangle ABC,prove that BD=1/2AC

Asked by gpnkumar0 5th September 2016, 8:50 PM
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CBSE - IX - Mathematics - Triangles

In the given figure if angle X=Y, and AB=CB. Prove that AE=CD.

Asked by atharvakute 7th July 2016, 8:06 PM
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CBSE - IX - Mathematics - Triangles

Triangle ABC and triangle DEF are two triangles such that AB, BC are respectively equal and parallel to DE, EF. Show that AC is equal and parallel to DF

Asked by Paresh 11th December 2015, 2:29 PM
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CBSE - IX - Mathematics - Triangles

what is CPCT ? WHERE IT IS USED  ?

Asked by prakritiprakash12 16th August 2015, 7:51 PM
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CBSE - IX - Mathematics - Triangles

prove that the medians of an equilateral triangle are equal.
 
plese prove this in full steps.

Asked by harshmandlik 29th August 2014, 9:30 AM
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CBSE - IX - Mathematics - Triangles

In fig., O is the mid-point of AB and CD. Prove that AC = BD.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Triangles

In figure, AB = BC, AD = EC. Prove that ABE CBD.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Triangles

In figure, AP and DP are bisectors of two adjacent angles A and D of a quadrilateral ABCD. Prove that 2APD = B + C.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Triangles

In figure, BCD = ADC and ACB = BDA. Prove that AD = BC and A = B.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Triangles

In figure, ABCD is a square and DEC is an equilateral triangle. Prove that: (i) ADE BCE (ii) AE = BE (iii) DAE = 15°

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Triangles

In fig., ABCD is a quadrilateral with AC = AD and AB bisects A. Show that ΔABC ΔABD. What can you say about BC and BD?

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Triangles

In figure, AC= AE, AB= AD and BAD = EAC. Prove that BC= DE.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Triangles

In figure, and O is the midpoint of AD. Show that (i) (ii) O is also the midpoint of BC.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Triangles

In ABC, the bisector AD of A is perpendicular to side BC. Show that ABC is an isosceles triangle.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Triangles

In right triangle ABC, right angled at C, M is the mid-point of hypotenuse AB. C is joined to M and produced to a point D such that DM = CM. Point D is joined to point B (see the given figure). Show that: (i) AMC BMD (ii) DBC is a right angle. (iii) DBC ACB (iv) CM = AB

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Triangles

Prove that two triangles are congruent if any two angles and the included side of one triangle is equal to any two angles and the included side of the other triangle.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Triangles

In fig., AD and BC are perpendiculars to a line segment AB such that AD = BC. Prove that CD bisects AB at P.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Triangles

In figure, two sides AB and BC and the median AM of ABC are respectively equal to sides DE and EF and the median DN of DEF. Prove that ABC DEF.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Triangles

In figure, AC = AE, AB = AD and BAD = EAC show that BC = DE.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Triangles

In figure, if AB = AD, x = w and y = z then prove that AP = AQ.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Triangles

In fig., ABC and DBC are two isosceles triangles on the same base BC and the vertices A and D are on the same side of BC. AD is extended to meet BC at P. Prove that AP bisects A. .

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Triangles

In ABC, AB = AC. X and Y are points on AB and AC such that AX = AY. Prove that ABY ACX

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Triangles

In figure, D and E are points on the base BC of a ABC such that BD = CE and AD = AE. Prove that ABE ACD.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Triangles

In fig., if ABD = ACE and AB = AC. Prove that BD = CE.

Asked by Topperlearning User 21st August 2012, 2:25 AM
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CBSE - IX - Mathematics - Triangles

In fig., if AC = BC, DCA = ECB and DBC = EAC then Prove that BD = AE.

Asked by Topperlearning User 21st August 2012, 2:23 AM
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CBSE - IX - Mathematics - Triangles

Prove that the midpoint of hypotenuse of right angle triangle is equidistant from three vertices

Asked by sachin0706 22nd March 2009, 6:50 PM
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