Answer:
14) AED = 139
15) CEF = 90
16) DEB = 41
17) BEF = 49
18) CEB = 139
19) AEF = 131
Step-by-step explanation:
14) DEC = 180 degrees, because it is a straight line. We know that AEC is 41 degrees, so to find AED, we just subtract DEC (180) by AEC (41) which is 139.
15) CED = 180 degrees, because it is a straight line. We know that DEF is 90 degrees, because it is a right angle, so to find CEF, we just subtract CED (180) by DEF (90) which is 90.
16) AEC = 41 degrees and we know that AEB and CED are straight lines, so that means it will be the same measurement on the other side, so DEB = 41.
17) We know that DEF is 90 degrees, because it is a right angle, and that DEB is 41 degrees, so to find BEF, we just subtract DEF (90) by DEB (41) which is 49.
18) We know that CEF is 90 degrees, because it is a right angle, and that FEB is 49 degrees, so to find CEB, we just add CEF (90) to FEB (49) which is 139.
19) We know that CEF is 90 degrees, because it is a right angle, and that AEC is 41 degrees, so to find AEF, we just add CEF (90) to AEC (41) which is 131.
