9. The measure of the vertex angle in an isosceles triangle is six less than four times the measure of a base angle. Find the measure of the vertex angle.

Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
Chapter3: Triangles
Section3.3: Isosceles Triangles
Problem 23E: A surveyor knows that a lot has the shape of an isosceles triangle. If the vertex angle measures 70...
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9. The measure of the vertex angle in an isosceles
triangle is six less than four times the measure
of a base angle. Find the measure of the vertex
angle.
Transcribed Image Text:9. The measure of the vertex angle in an isosceles triangle is six less than four times the measure of a base angle. Find the measure of the vertex angle.
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