prove that the angles opposite to equal sides of an isosceles triangle are equal. Using the above, find <b in with AB=BC in which <c=50.

Prove that the bisectors of pair of Vertically opposite angles are on the same straight line..

(please i want the answer by the expert..)

 if two parallel lines are intersected by a transversal,then prove that bisectors of the interior angles form a rectangle.

Prove that if the two arms of an angle are perpendicular to the two arms of another angle, then the angles are either equal or supplementary.

 if two parallel lines are intersected by a transversal prove tha bisectors of the two pair of interior angles enclose an rectangle

plz answer it immediately its most urgent

in the figure, the side BC of triangle ABC is produced to D. the bisector of angle A meets BC at L. prove that angle ABC+ angleACD= 2 angle ALC

A transversal intersects two parallel lines. Prove that the bisectors of any pair of corresponding angles so formed are parallel.

Please send the answer as soon as possible

 Triangle ABC is an isosceles triangle with AB=AC, side BA is produced to D such that AB=AD. Prove that angle BCD is a right angle.

bisector of angle b and angle d of a quadrilateral abcd meet cd and ab produced at point p and q respectively prove( angle p +angle q=1/2 angle abc +angle adc)

1)AD,BE and CF, the altitudes of triangle ABC are equal. prove that triangle ABC is an equilateral triangle.

2) Prove that the sum of all sides of a quadrilateral is greater than the sum of its diagnols.

Prove that the bisectors of two adjacent supplementary angels include a right angle.

 In figure if AB parallel CD then find the value of X 

answers for test your knowledge in golden maths guide .please tell please

 if o is any point in the interior od triangleABC.PROVE OA +OB+OC>1/2(AB+BC+CA)

prove that the bisectors of the angles of a linear pair are at right angles.

Bisectors of angle B and angle C of a triangle ABC intersect each other at point O.Prove that angle BOC=90degree+half of angle A.

m and n are plane mirrors perpendicular to each other. Prove that incident ray CA (to mirror n ) is parallel to reflected ray (to mirror m ) BD. 

Respected Sirs,

Please answer my this question as soon as possible. I tried to insert the figure from ms-paint file but was unable to do so. But I believe that the question is self descriptive.

"Angle Q is greater than angle R and M is a point on QR such that PM is the bisector of angle QPR If the perpendicular from P on QR meets at N, prove that angle MPN =1/2(angle Q-angle R)

Can you explain me the angle sum property of a triangle ?

if two straight lines intersect each other prove that the ray opposite to the bisector of one of the angles thus formed bisects the vertically opposite angles

plz answer this immediately , its most urgent

in a right angeled triangle , one acute angle is double the other. proove that the hypotenuse is double the smallest side?

If the arms of one angle are respectively parallel to the arms of another angle, show that the two angles are either equal or supplementary.

Find the measure of an angle, if seven times its complement is 10 less

that BAL = ACB.

parallel to each other.

The sides BC, CA and AB of Triangle ABC, are produced in order, forming exterior angles /_ACD, /_BAE and /_CBF.  Show that

angle ACD + angle BAE + angle CBF = 360 degree.

If two parallel lines are cut by a transversal ,prove that the bisectors of the interior angles on the same side of the tranversal intersect each other at right angles

The side BC of triangle ABC is produced on both sides. Prove that the sum of the two exterior angles so formed is greater than angle A by 180 degree.

prove that two distinct lines cannot have more than one point in common.

A triangle has 3 sides 35cm.,54cm,and 61cm. long .Find it's area. Also, find he smallest of it's altitude.

Prove that vertically oppossite angles are equal.

 Plz help,

In the figure, PQRS is a quadrilateral & T & U are respectively points on PS & RS such that PQ = RQ, /_PQT = /_RQU & /_TQS = /_UQS. Prove thart QT = QU

What is an axiom ?

i want all the solution of these theorems aas soon as possible

1.prove that sum of three angles of a triangle is 180 degree

2.Angle opposite to equal sides of a triangle are equal

3.Two triangles are congurent,if any two angles and included side of  one triangle is equal to any two angles and the included side of the other triangle.

4.If two lines intersect at each other at point o.Prove that they are vertically opposite angles.

1.Prove that the bisectors of a pair of vertically opposite angles are in the same straight line.

2. If two straight lines intersect each other, provethat the ray opposite to the bisector of one of theangles thus formed bisects the vertically opposite angle.

3. Ifone four angles formed by two intersecting lines is a right angle, thenshow that each of the four angles is a right angle.

4.AB,CD and EF are three concurrentlines passing through thepointOsuch that OF bisects /_BOF = 35^o, find /_BOC and/_AOD.

Please send me as soon as itpossible I have my test.

the sides BA DC of quadrilateral ABCD are produced to P Qrespectively. angle DAP=b,angle BCQ=a,angle D=y, angle B=x. showt that angle x+angle y=angle a+angle b

if an angle is 30 degree more than one half of its complement find the measure of the angle

Angle Q Angle R, PA is the Bisector of Angle QPR and PM Perpendicular to QR.Prove that Angle APM = 1/2 (Angle Q - Angle R)

1. In a fig. , Angle AOC and angle BOC form a linear pair. If a - 2b = 30 degrees , find a and b.

Line AB and CD are parallel and P is any point between them. Show that angleABP + angleCDP = angleDPB

in a quadrilateral ABCD, AO and DO are the bisec tors of angleA and D respectively which meet at a point O inside the quadrilateral. prove that angleAOD = 1/2 (angleB + C).  please answer! very urgent

RS AGGARWAL CH 4 EXERCISE 4C QU9STON NO. 3,7,9