Angle sum property of triangles - Revision history

Anusha sharma at 18:15, 3 October 2021

2021-10-03T18:15:17Z

Anusha sharma at 18:10, 3 October 2021

2021-10-03T18:10:33Z

Anusha sharma at 18:07, 3 October 2021

2021-10-03T18:07:37Z

Anusha sharma at 18:06, 3 October 2021

2021-10-03T18:06:32Z

Anusha sharma: Created blank page

2021-10-03T18:06:09Z

Created blank page

New page

← Older revision		Revision as of 18:15, 3 October 2021
Line 1:		Line 1:
		+	Source: IT for Change
		+
	=== Objectives ===		=== Objectives ===
	* To establish the angle sum property of a triangle		* To establish the angle sum property of a triangle

@@ Line 28: / Line 28: @@
 # If a triangle has all three angles are equal in measure, then what will the measure of each angle?
-'''Download lesson'''
+'''[[:File:Angle sum property triangles.odt|Download lesson]]'''
 [[Category:Triangles]]

@@ Line 27: / Line 27: @@
 # In a triangle, if the sum of two angles is 60°, then what will be the measure of third angle?
 # If a triangle has all three angles are equal in measure, then what will the measure of each angle?
-Go back to the page - [https://karnatakaeducation.org.in/KOER/en/index.php/Triangles?veaction=edit&section=20 click here]
 [[Category:Triangles]]

← Older revision	Revision as of 18:06, 3 October 2021
Line 1:	Line 1:
	+	=== Objectives ===
	+	* To establish the angle sum property of a triangle
	+	* To help visualization of the geometric proof

	+	=== Estimated Time ===
	+	30 minutes
	+
	+	=== Prerequisites/Instructions, prior preparations, if any ===
	+	Prior understanding of point, lines and angles, adjacent angles, vertically opposite angles, linear pair, parallel lines, alternate angles, corresponding angles.
	+
	+	=== Materials/ Resources needed ===
	+	Click here to [[:File:Angle sum property of triangle.ggb\|open]] the file
	+
	+	=== Process (How to do the activity) ===
	+	{{Geogebra\|xbwbcdgn}}
	+	* Students should be able to recognize the corresponding angles formed when the parallel line is drawn.
	+	* Students should be able to recognize the alternate angles formed. Is the alternate angle same as one of the angles of the triangle.
	+	** Ask students what happens when the three angles of the triangle are placed adjacent to each other.
	+	** What can you say about the line drawn?
	+	** Is it parallel to one of the sides?
	+	** What can you say about the pairs of angles – look at the matching colours.
	+	** Once the parallel line reaches the vertex, how many angles are formed?
	+	** Students should be able to identify the two angles moving are corresponding angles as the line moving is parallel to one of the sides.
	+	** Students can see that when the three angles of the triangle are placed adjacent to each other they form a straight line.
	+
	+	=== Evaluation at the end of the activity ===
	+	# In a triangle, if the sum of two angles is 60°, then what will be the measure of third angle?
	+	# If a triangle has all three angles are equal in measure, then what will the measure of each angle?
	+	Go back to the page - [https://karnatakaeducation.org.in/KOER/en/index.php/Triangles?veaction=edit&section=20 click here]
	+
	+	[[Category:Triangles]]