9. In the diagram below, LDEC and ZCEF are complementary angles. Find the value of x and the measure of each angle. Show your work! D. E 7x-15° 3x JA 7x-15= 3X -3 -3 4x = 45 X = mLDEF = m/DEC = m/CEF = d lengths

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
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9. In the diagram below, ZDEC and ZCEF are complementary angles. Find the value of x and the measure of
each angle. Show your work!
7X-15=3X
D
EL
7x-15°
3x°
F
-3
-3
4x = 15
X =
m/DEF =
m/DEC =
m/CEF =
Transcribed Image Text:9. In the diagram below, ZDEC and ZCEF are complementary angles. Find the value of x and the measure of each angle. Show your work! 7X-15=3X D EL 7x-15° 3x° F -3 -3 4x = 15 X = m/DEF = m/DEC = m/CEF =
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