Please it's very important please answer ASAP.
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30° because corresponding exterior angles
maheeth95:
ok bro
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GIVEN :-
- AD PERPENDICULAR BC
- AD BISECTS ANGLE BAC
TO PROVE :-
- ANGLE ACE = ?
PROOF :-
ANGLE BDA = ANGLE CDA ( 90° EACH )
=> 90° + 30° + ANGLE BAD = 180
=> ANGLE BAD = 180° - 120°
=> ANGLE BAD = 60°
ANGLE BAD = ANGLE CAD( BISECTOR OF AD )
=> 90° + 60° + ANGLE ACD = 180°
=> ANGLE ACD = 180° - 150°
=> ANGLE ACD = 30°
ANGLE ACD + ANGLE ACE = 180 ( LINEAR PAIR )
=> 30° + ANGLE ACE = 180°
=> ANGLE ACE = 180 - 30
=> ANGLE ACE = 150°
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