Difference between revisions of "Intersection of two lines"
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=== Objectives === | === Objectives === | ||
| − | To verify | + | To verify vertically opposite angles are equal |
=== Estimated Time === | === Estimated Time === | ||
| Line 20: | Line 20: | ||
# Identify the angles formed at common vertex 'A' | # Identify the angles formed at common vertex 'A' | ||
# Identify two pairs of opposite angles | # Identify two pairs of opposite angles | ||
| − | + | # What is the vertically opposite angle?how many pair of vertically opposite angles are formed? | |
| + | # Identify and measure vertically opposite angles?What is your conclusion? | ||
| + | # Can vertically opposite angles be adjacent? | ||
| + | # | ||
=== Evaluation at the end of the activity === | === Evaluation at the end of the activity === | ||
| − | Can two lines cross at two points? | + | # Can two lines cross at two points? |
| − | + | # If out of two angles of linear pair one is 60°, then what is the measure of other angle? | |
| + | # If two angles are vertically opposite angles, where the measure of one of the angles is 30°, then what is the measure of other angle? | ||
Go back - [[KVS Lines and Angles|click here]] | Go back - [[KVS Lines and Angles|click here]] | ||
Revision as of 17:34, 29 August 2020
Objectives
To verify vertically opposite angles are equal
Estimated Time
20 minutes
Prerequisites/Instructions, prior preparations, if any
Knowledge about point, line, angle
Materials/ Resources needed
Digital: Click here to open the file
Non-digital: Paper, pencil, ruler, compass, protractor
Process (How to do the activity)
Download this geogebra file from this link.
Procedure :
- What are intersecting lines?
- Identify two lines cross each other in a plane i.e. lines 'g' and 'f' intersect at point 'A'
- Identify intersecting lines (two or more) meet only at one point always and also can cross each other at common vertex (which is the point of intersection).
- Identify the angles formed at common vertex 'A'
- Identify two pairs of opposite angles
- What is the vertically opposite angle?how many pair of vertically opposite angles are formed?
- Identify and measure vertically opposite angles?What is your conclusion?
- Can vertically opposite angles be adjacent?
Evaluation at the end of the activity
- Can two lines cross at two points?
- If out of two angles of linear pair one is 60°, then what is the measure of other angle?
- If two angles are vertically opposite angles, where the measure of one of the angles is 30°, then what is the measure of other angle?
Go back - click here