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EOCT REVIEW AT HOME PACING GUIDE. USA TEST PREP You will submit your work TO ME… SO, I will know who is studying and who ISN’T!. Angles and Intersecting Lines. Angles and Parallel Lines. Transversal.
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EOCT REVIEW AT HOMEPACING GUIDE USA TEST PREP You will submit your work TO ME… SO, I will know who is studying and who ISN’T!
Transversal • A line that intersects two or more lines in a plane at different points is called a transversal. • When a transversal t intersects line n and m, six other angles of the following types are formed: Exterior angles Interior angles Consecutive interior angles Alternative exterior angles Alternative interior angles Corresponding angles t m n
Angles and Parallel Lines • If two parallel lines are cut by a transversal, then the following pairs of angles are congruent. • Corresponding angles • Alternate interior angles • Alternate exterior angles • If two parallel lines are cut by a transversal, then the following pairs of angles are supplementary. • Consecutive interior angles • Consecutive exterior angles
Corresponding Angles & Consecutive Angles Corresponding Angles: Two angles that occupy corresponding positions. 2 6, 1 5,3 7,4 8 1 2 3 4 5 6 7 8
Consecutive Angles Consecutive Interior Angles: Two angles that lie between parallel lines on the same sides of the transversal. Consecutive Exterior Angles: Two angles that lie outside parallel lines on the same sides of the transversal. m3 +m5 = 180º, m4 +m6 = 180º 1 2 m1 +m7 = 180º, m2 +m8 = 180º 3 4 5 6 7 8
Alternate Angles • Alternate Interior Angles: Two angles that lie between parallel lines on opposite sides of the transversal (but not a linear pair). • Alternate Exterior Angles: Two angles that lie outside parallel lines on opposite sides of the transversal. 3 6,4 5 2 7,1 8 1 2 3 4 5 6 7 8
B A 1 2 10 9 12 11 4 3 C D 5 6 13 14 15 16 7 8 s t Example:If line AB is parallel to line CD and s is parallel to t, find the measure of all the angles when m< 1 = 100°. Justify your answers. m<2=80° m<3=100° m<4=80° m<5=100° m<6=80° m<7=100° m<8=80° m<9=100° m<10=80° m<11=100° m<12=80° m<13=100° m<14=80° m<15=100° m<16=80°
B A 1 2 10 9 12 11 4 3 C D 5 6 13 14 15 16 7 8 s t If line AB is parallel to line CD and s is parallel to t, find: Example: 1. the value of x, if m<3 = 4x + 6 and the m<11 = 126. 2. the value of x, if m<1 = 100 and m<8 = 2x + 10. 3. the value of y, if m<11 = 3y – 5 and m<16 = 2y + 20. ANSWERS: 1. 30 2. 35 3. 33
Perpendicular Bisector A segment, ray, line, or plane that is perpendicular to a segment at its midpoint.
Equidistant Equidistant from two points means that the distance from each point is the same.
Perpendicular Bisector Theorem If a point is on the perpendicular bisector of a segment, then it is equidistant from the endpoints of the segment.
Converse of the Perpendicular Bisector Theorem If a point is equidistant from the endpoints of a segment, then it is on the perpendicular bisector of a segment.
Example Does D lie on the perpendicular bisector of