Geometry: An Interactive Journey to Mastery

(Greg DeLong) #1


%HJLQQLQJV²-DUJRQDQG8QGH¿QHG7HUPV
Lesson 2

Topics
x 1RWDWLRQSRLQWVOLQHVOLQHVHJPHQWVGLVWDQFHFRQJUXHQWOLQHVHJPHQWVPLGSRLQWV
x &ROOLQHDUSRLQWVDQGFRSODQDUSRLQWV
x 'H¿QLWLRQVDQGFLUFXODUUHDVRQLQJ
x $QJOHV
x 9HUWLFDODQJOHWKHRUHP
'H¿QLWLRQV
x acute angle$QDQJOHZLWKPHDVXUHVWULFWO\EHWZHHQƒDQGƒLVDFXWH
x angle bisector$OLQHWKDWGLYLGHVDJLYHQDQJOHLQWRWZRFRQJUXHQWDQJOHVLVDQDQJOHELVHFWRUIRU
WKDWDQJOH
x bisects$SRLQWMVLWWLQJRQDOLQHVHJPHQWABLVVDLGWRELVHFWWKHOLQHVHJPHQWLIAM = MB.
x congruent angles7ZRDQJOHVRIWKHVDPHPHDVXUHDUHFRQJUXHQW
x congruent line segments7ZROLQHVHJPHQWVRIWKHVDPHOHQJWKDUHFRQJUXHQW
x collinear7ZRRUPRUHSRLQWVDUHFROOLQHDULIWKH\OLHRQDFRPPRQOLQH
x coplanar7ZRRUPRUHSRLQWVDUHFRSODQDULIWKH\OLHRQDFRPPRQSODQH
x midpoint$SRLQWMLVDPLGSRLQWRIOLQHVHJPHQWAB if MOLHVRQWKHVHJPHQWDQGAM = MB.
x obtuse angle$QDQJOHZLWKPHDVXUHVWULFWO\EHWZHHQƒDQGƒLVREWXVH
x perpendicular7ZROLQHVRUOLQHVHJPHQWVWKDWLQWHUVHFWDWDQDQJOHRIƒDUHSHUSHQGLFXODU
x UHÀH[DQJOH:$QDQJOHZLWKPHDVXUHVWULFWO\EHWZHHQƒDQGƒLVDUHÀH[DQJOH
x right angle:$QDQJOHZLWKPHDVXUHƒLVDULJKWDQJOH

Free download pdf