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From Karnataka Open Educational Resources
→Activity No #
===Learning objectives===
===Learning objectives===
===Notes for teachers===
===Notes for teachers===
===Activity No # ===
'''===Activity No # 1.Angles formed when a transversal intersects parallel lines ==='''
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''[http://www.karnatakaeducation.org.in/?q=node/305 Click to Comment]''</div>
''[http://www.karnatakaeducation.org.in/?q=node/305 Click to Comment]''</div>
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*Estimated Time
'''*Estimated Time :''' 40 minutes
*Materials/ Resources needed
'''*Materials/ Resources needed :'''Laptop, geogebra file, projector and pointer.
*Prerequisites/Instructions, if any
'''*Prerequisites/Instructions, if any :'''
*Multimedia resources
#The students should have prior knowledge of parallel lines , transversal, angles and types of angles formed when a pair of parallel lines are intersected by a transversal.
*Website interactives/ links/ / Geogebra Applets
#They should know what the terms interior, exterior, adjacent, alternate, consecutive, congruent, linear and corresponding mean.
*Process/ Developmental Questions
#Students should know the definition of complementary angles, supplementary angles, and congruent angles.
*Evaluation
'''*Multimedia resources:'''
*Question Corner
Laptop
'''*Website interactives/ links/ / Geogebra Applets'''
'''*Process:'''
#Reiterate that when a transversal intersects parallel lines, several pairs of congruent and supplementary angles are formed.
#Have students draw two parallel lines and a third line(transversal) intersecting those two lines on their own paper. Direct them to think about any angle relationships they see. Have them discuss their conjectures with a partner.
#The teacher can next project the GeoGebra worksheet and discuss about types of angles and their relationships with the class .
#Finally the teacher and students can summarize together the angle relationshipsalong with their characteristics.
Linear pair of angles - adjacent and supplementary<br>
*Vertical angles - congruent<br>
*Corresponding angles -congruent<br>
*Alternate interior angles - congruent<br>
*Same side interior angles - supplementary<br>
*Alternate exterior angles - congruent<br>
*Same side exterior angles - supplementary
'''Developmental Questions :(What discussion questions)'''
#How many pairs of corresponding angles are there ?
#What is true about corresponding angles formed when parallel lines are cut by a transversal?
#Compare different pairs of alternate interior angles. What do you notice?
#<EGD and <AHF are alternate exterior angles. What is another pair of alternate exterior angles?
#Compare different pairs of same-side interior angles. What do you notice?
#Compare different pairs of same-side exterior angles. What do you notice?
'''*Evaluation:'''
#What are the characteristics of linear angles (adjacent and supplementary) ?
#What do you observe about the angle measures of the linear angles?
'''*Question Corner:'''
# What do adjacent , alternate, linear , corresponding and consecutive mean individually
# What are complementary angles?
# What are supplementary angles ?
# What does it mean if two angles are congruent?
# What is the complement of 65 degrees
# What is the supplement of 70 degrees?
# Compare angle relationships formed by parallel lines vs. angle relationships formed by non-parallel lines.
===Activity No # ===
===Activity No # ===
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