angles and parallel lines a° b° corresponding angles for parallel lines are equal m n t m and n...
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Angles and parallel lines
a°
a°
a°
a°
b°
b°
b°
b°
Corresponding angles for parallel lines are equal
Corresponding angles for parallel lines are equal
m
n
t
m and n are parallel lines, t is a Transversal
A transversal is a line that cuts other lines
For one set of parallel lines and one transversal there are four sets of corresponding angles.
Angles and parallel lines
a°
a°
b°
b°
Corresponding angles for parallel lines are equal.
m
n
t
m and n are parallel lines, t is a Transversal
A transversal is a line that cuts other lines
65°
G°
G° = 65°,ReasonCorresponding angles, parallel lines are equal
See Alpha text book for further notes Page 266 Ex 18.4 Copy diagrams for each of the questions 1 to 6 and complete.Please use a ruler and pencil.Mark all work from answers.Ex 18.5 Copy diagrams and complete numbers 1, 3 , 5, 7, 9 & 10
Note the position of the named angles. Can you see why they are the same size?
Draw a set of parallel linesAdd a transversalMeasure an angleMeasure the corresponding angle.Are the corresponding angles equal?
Angles and parallel lines
a°
a°
b°
b°
Alternate angles for parallel lines are equal
m
n
t
m and n are parallel lines, t is a Transversal
A transversal is a line that cuts other lines
For one set of parallel lines and one transversal there are two sets of Alternate angles.
Angles and parallel lines
a°
a°b°
b°
Alternate angles for parallel lines are equal.
m
n
t
m and n are parallel lines, t is a Transversal
A transversal is a line that cuts other lines
125°
G°
G° = 125°,ReasonAlternate angles, parallel lines are equal
See Alpha text book for further notes Page 264 Ex 18.2 Copy diagrams for each of the questions 1 to 8 and complete.Please use a ruler and pencil.Mark all work from answers.Ex 18.3 Copy diagrams and complete numbers 1, 3 , 5, 7, 9 & 11
Note the position of the named angles. Can you see why they are the same size?
Draw a set of parallel linesAdd a transversalMeasure an angleMeasure the Alternate angle.Are the Alternate angles equal?
Angles and parallel lines
a°
b°b°a°
Co-Interior angles for parallel lines are supplementary, a + b =180°
m
n
t
m and n are parallel lines, t is a Transversal
A transversal is a line that cuts other lines
125°
k°
K° = 65°,ReasonCo-interior angles, parallel lines are supplentaryl
See Alpha text book for further notes Page 269 Ex 18.6 Copy diagrams for each of the questions 1 to 10 and complete.Please use a ruler and pencil.
Note the position of the named angles.
Draw a set of parallel linesAdd a transversalMeasure two co-interior anglesAre they supplementary?
Extension work: Mark all work from answers.Ex 18.7 Copy diagrams and complete numbers 1 to 21 complete for Homework.