SOLUTION: The given traingles is an isosceles triangle with AB=AC. If Angle A measures 78 degrees find the measure of Angle B

Question 1149290: The given traingles is an isosceles triangle with AB=AC. If Angle A measures 78 degrees find the measure of Angle B
Answer by ikleyn(52780) (Show Source): You can put this solution on YOUR website!
.
The given triangle is an isosceles triangle with AB=AC. If Angle A measures 78 degrees find the measure of Angle B
~~~~~~~~~~~~~~~~~~~~~

The measure of the angle B is m(B) = = 51 degrees.

    Rationales :


        a)  the angles at the base of an isosceles triangle are congruent,  and

        b)  the sum of interior angles of each triangle is 180 degrees.

RELATED QUESTIONS
△ABC lies in the structural support system of the Ferris wheel. If m∠A = 30° and... (answered by ikleyn)

find the measure of each base angle of an isosceles triangle if the vertex angle measures (answered by bucky)

find the measure of each base angle of an isosceles triangle if the vertex angle... (answered by Alan3354)

A base angle of an isosceles triangle measures 18 degrees. Find the measure of the vertex (answered by nerdybill)

A base angle if an isosceles triangle measures 50 degrees. Find the number of degrees in... (answered by Simnepi)

If the measure of the vertex angle of an isosceles triangle is 24degrees less than the... (answered by mananth)

[ What is the measure of a base angle of an isosceles triangle if the vertex angle... (answered by TimothyLamb)

A right triangle has these measures: AC=4yds, AB=12yds, angle C is 90 degrees. What is... (answered by Alan3354)

To the nearest degree, find the measure of angle B in Triangle ABC given measure of Angle (answered by ccs2011)