39. Think About a Plan AABC = ADBE. Find the value of x. • What does it mean for two triangles to be congruent? • Which angle measures do you already know? How can you find the missing angle measure in a triangle?
39. Think About a Plan AABC = ADBE. Find the value of x. • What does it mean for two triangles to be congruent? • Which angle measures do you already know? How can you find the missing angle measure in a triangle?
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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Transcribed Image Text:C 39. Think About a Plan AABC = ADBE. Find the value of x.
• What does it mean for two triangles to be congruent?
• Which angle measures do you already know?
How can you find the missing angle measure in a triangle?

Transcribed Image Text:E
51°
81°
(x + 5)°
D
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