ABC is a triangle. AD is a median of ABC. E is the midpoint of AD and produced to meet AC at F. prove that AF=1/3AC

what is the full form of cpct ?  what does it mean ?

1.if two isosceles triangle have a common base,prove that the line segment joining their vertices bisects the common base at right angles.

2.show that the sum of three medians of a triangle is less than its perimeter.

In a triangle ABC AD is the bisector of angle BAC. Show that AB>BD and AC>CD

 1. If the bisector of an angle of a triangle also bisect the opp. side , prove that the triangle is isos . triangle ?

2. If triangle ABC is right angle at B. such that angle BCA=2 angle BAC . show that hypt.AC =2BC  ?

3. bisector of angle B and angle C of isos. triangle ABC with AB=AC intersect each other at O. Show that external angle adjacent to angle ABC = angle BOC 

4. In a rt. triangle prove that the line segment joining the mid point of the hypt to the opp. vertex is half of the hypt ?

5. line segment joining the midpoint M&N of prallel sides AB and DC . respectivelly of a trap. ABCD is perpendicular to both sides AB and DC . prove that AD = BC ?

What is CPCT?Give me a detailed brief about cpct?

If the altitudes of a triangle ABC are equal,then prove that triangle is equilateral.

if a+b+c=15 and a2+b2+c2=83 find value of a3+b3+c3-3abc

  Prove that Sum of Two Sides of a triangle is greater than twice the length of median drawn to third side.

proof for basic proportionality theorem

prove that sum of all 3 angles of a triangle is 180.

if x³ + 1/x³ = 110 then find the value of x+1/x

If D is a mid-point of the hypotenuse AC of a right angled triangle ABC ( right angled at B ), prove that BD=1/2 AC

In a triange ABC, prove that AB + AC > 2AD, where AD is the median from A to BC..pls answer this one....

prove that the difference of any two sides of a triangle is less than third side.

rs agarwal class 9 summative assessment sample paper 1 solution Question 33

 prove that the perpendicular bisector of the sides of a cyclic quadrilateral are concurrent.

abc is a triangle with angle b = 2(angle c). d is a point on bc such that ad bisects angle bac and ab = cd.Prove angle bac = 72 degree

 the  side QR of triangle PQR is produced to a point S. If the bisectors of angle PQR and angle PRS meet at a point T, then prove that Angle QTR = 1/2 angle QPR.

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I need the answer quick!!!!!

Prove that medians of equilateral triangle are equal.

Prove tht sum of 3 altitudes of a triangle is less than the sum of three sides of a triangle

Construct a triangle XYZ in which angleY = 30 degree, angle Z = 90 degree, xy + yz + zx = 11cm.
.Is it possible to  have a triangle like this without decimals considering the Pythagorean theorem??

From a point in the interior of an equilateral triangle,perpendiculars are drawn on three sides.The length of perpendiculars are 14 cm,10 cm and 6 cm.Find the area of the triangle.

 maths crossword puzzle for class 9

ABCD is a square and EF is parallel to diagonal BD and EM=FM. prove that

DF=BE

AM bisects angle BAD

1) Prove that sum of any two sides of a triangle is greater than twice the median with respect to third side.

2) Show that the sum of three altitudes of a triangle is less than the sum of all three sides of triangle.

3) Prove that any two sides of a triangle are together greater than twice the median drawn to the 3rd side.

4) Prove that the perimeter of a triangle is greater than the sum of its medians.

5) In a quadrilateral ABCD in which diagonals AC BD intersects at O. Show that AB+BC+CD+DA 2(AC+BD)

6) ABC is a triangle in which angle B = twice angle C. D is a point on side BC such that AD bisects angle A and AB= CD. Prove that Angle BAC=72

 If the bisector of the vertical angle of a triangle bisects the base,prove that the triangle is isosceles.

In triangle PQR, PS is the bisector of angle QPR and PT perpendicular QR. Show that angle TPS = 1/2 (angle Q-angle R).

Its urgent ...Answer Fast Please.....

AB and CD are respectively the smallest and longest sides of a quadrilateral ABCD. Show that angle A is greater than angle C and angle B is greater than angle D.

In triangle ABC points D and E are on bc such that BD=EC and AD=AE prove that AB=AC

Prove that the perimeter of a triangle is greater than the sum of its altitudes

PQRS is a square and SRT is an equilateral triangle. Prove that PT=QT and angle TQR=15 degrees

Prove that the perimeter of a triangle is greater than sum of its three altitudes.

S is a point on side QR of a triangle PQR. Show that: PQ + QR + RP 2PS

can you give a brief proof for SSS congruence rule??

The sides of a triangle are 5 cm,12 cm and 13cm.find the length of perpendicular from the opposite vertex to the side whose length is 13cm

 Prove that in a quadrilateral the sum of all sides is greater than the sum of it's diagonals.

IN A RIGHT ANGLED TRIANGLE , ONE ACUTE ANGLE IS DOUBLE THE OTHER.PROVE THAT THE HYPOTENUSE IS DOUBLE THE SMALLEST SIDE

what is heron??.what is full form of SSS,ASS,RHS,SAS?

What is CPCT and can you explain the congruence rules ?

How do we prove the RHS congruence rule??

Which practise book is more suitable?R.D Sharma/Reliable Question Bank fot 9th grade Maths?

 what is the full form of cpct

 prove that each angle of a rectangle is a right angle ?

In Figure given below, ∠Q > ∠R, PA is the bisector of ∠QPR and PM

in triangle abc , angle b = 45 degree angle c = 55 degree and bisector af angle a meet bc at point d find the measure of angle adb and angle adc

plx help

P is a point on the bisector of ∠ABC. If the line through P, parallel to BA meet BC at Q, prove that BPQ is an isosceles triangle.

where can i get rs aggarwal maths solutions?

abcd is a parallelogram.if the two diagonals are equal.find the measure of angle abc