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What is the proof that an angle bisector actually bisects an angle?
Wiki User
∙ 14y ago
In general 'to bisect' something means to cut it into two equal parts. The 'bisector' is the thing doing the cutting.
In an angle bisector, it is a line passing through the vertex of the angle that cuts it into two equal smaller angles.
Therefore it's in the definition.
Wiki User
∙ 14y ago
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Supplements of the same angle are congruent what's the best statement for reason 6 of this proof?
angle B and angle D are supplements, angle B is congruent to angle D, angle A is congruent to angle A, or angle A is congruent to angle C
which of the following reasons can be used for statement 3 of the proof of the exterior angle theorem?
triangle sum theorem
Prove that the bisectors of the angles of a linear pair are at right angle?
I am working on the same exact proof right now and i am lost
what- complete blank 1 and blank 2 for the proof of the third angle theorem?
(1) triangle sum, (2) subtraction
How do you prove that the diagonals in a rhombus divide the rhombus into four congruent triangles?
The proof is fairly long but relatively straightforward. You may find it easier to follow if you have a diagram: unfortunately, the support for graphics on this browser are hopelessly inadequate.Suppose you have a rhombus ABCD so that AB = BC = CD = DA. Also AB DC and AD BC.Suppose the diagonals of the rhombus meet at P.Now AB DC and BD is an intercept. Then angle ABD = angle BDC.Also, in triangle ABD, AB = AD. therefore angle ABD = angle ADC.while in triangle BCD, BC = CD so that angle DBC = angle BDC.Similarly, it can be shown that angle BAC = angle CAD = angle DCA = angle ACB.Now consider triangles ABP and CBP. angle ABP (ABD) = angle CBP ( CBD or DBC),sides AB = BCand angle BAP (BAC) = angle BCP (BCA = ACB).Therefore, by SAS, the two triangles are congruent.In the same way, triangles BCP and CPD can be shown to congruent as can triangles CPD and DPA. That is, all four triangles are congruent.
What is the missing justification in the proof of the angle bisector construction?
SSS - APEX
Write a two column proof Given EF bisects angle GEH EF bisects angle GEH Proof EGF EHF?
Based on the information given in he question, the assertion need not be true and so there can be no proof.
What reasons are proof that the angle bisector construction can be used to bisect any angle?
Proposition 3 of Book IV in Euclid's Elements (angle bisector theorem)
Which of the following are reasons ised in the proof that the angle-bisector construction can be used to bisect any angle?
That one there!
Which of the following are reasons used in the proof that the angle bisector construction can be used to bisect any angle?
-CPTCP -SSS triangle congruence postulate -all of the radii of the circle are congruent apex :)
What is the proof that equiangular triangle is also called equilateral triangle?
Label the triangle ABC. Draw the bisector of angle A to meet BC at D. Then in triangles ABD and ACD, angle ABD = angle ACD (equiangular triangle) angle BAD = angle CAD (AD is angle bisector) so angle ADB = angle ACD (third angle of triangles). Also AD is common. So, by ASA, triangle ABD is congruent to triangle ACD and therefore AB = AC. By drawing the bisector of angle B, it can be shown that AB = BC. Therefore, AB = BC = AC ie the triangle is equilateral.
which correctly completes the two column proof?
(5) reflexive, (6) side- side- side
Which cannot be used as a reason in a proof?
AAA (angle angle angle) cannot be used as a reason in a proof when proving triangles congruent .
State the assumption needed to begin an indirect proof of Angle A is an obtuse angle?
Angle A is not an obtuse angle
Proof kite diagonal bisector conjecture?
The diagonals of a kite are perpendicular and therefore bisect each other at 90 degrees
What is the best reason in a proof for an angle being a right angle?
being a nice and helpful good angle.
Supplements of the same angle are congruent what's the best statement for reason 6 of this proof?
angle B and angle D are supplements, angle B is congruent to angle D, angle A is congruent to angle A, or angle A is congruent to angle C
