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Find the value of y. 70 Solution Notice that y represents the measure of a base angle of an isosceles triangle. From the base angle has the same measure. The vertex angle forms a linear pair with a 70° angle, so its measure is Theorem, the other 110° + 180° Apply the Triangle Sum Theorem. %3D y = Solve for y.

Find the value of y. 70 Solution Notice that y represents the measure of a base angle of an isosceles triangle. From the base angle has the same measure. The vertex angle forms a linear pair with a 70° angle, so its measure is Theorem, the other 110° + 180° Apply the Triangle Sum Theorem. %3D y = Solve for y.

Elementary Geometry For College Students, 7e
Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
SectionP.CT: Test
Problem 1CT
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Example 1 Uslng Isosceles Trlangles Find the value of y. 70° Solution Notice that y represents the measure of a base angle of an isosceles triangle. From the base angle has the same measure. The vertex angle forms a linear pair with a 70° angle, so its measure is Theorem, the other 110° + = 180° Apply the Triangle Sum Theorem. y = Solve for y.
Transcribed Image Text:Example 1 Uslng Isosceles Trlangles Find the value of y. 70° Solution Notice that y represents the measure of a base angle of an isosceles triangle. From the base angle has the same measure. The vertex angle forms a linear pair with a 70° angle, so its measure is Theorem, the other 110° + = 180° Apply the Triangle Sum Theorem. y = Solve for y.
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