Difference between revisions of "Congruence in triangles – SSS Rule"

Latest revision as of 16:32, 30 October 2019

Investigating the possibility of congruence if three sides of two triangles are congruent.

Objectives

Compare sides in triangles to check for congruence

Estimated Time

30 minutes

Prerequisites/Instructions, prior preparations, if any

Prior knowledge of point, lines, angles, closed figures

Materials/ Resources needed

Digital : Computer, geogebra application, projector.
Non digital : Worksheet and pencil, triangles of same and different shapes
3. Geogebra files : “SSS congruence.ggb”

Download this geogebra file from this link.

Process (How to do the activity)

Prior hands on activity

Three triangles are distributed to groups of students.
Children should identify the triangles that are congruent.
They can name the vertices in the given triangles.
Write down the sides and angles that are coinciding in the two triangles.

Use the geogebra file

How many triangles you observe?
Are all the triangles same, point out the triangles that are same.
How can you say they are same? What can you do to check if the two triangles are congruent?
What parameters of triangles are required to know if they are congruent?
What about the third triangle is it the same as the other two, what you should do to show the triangle is same as the others – concept pf reflection can be discussed

HW:

Make two triangles of same sizes. Cut it and verify they are congruent.
Construct one triangle – Base = 3, 4 and 5 are other sides. Another triangle base = 5; and two sides are 3 and 4. Another triangle base = 4; and two sides are 3 and 5. Does the order of sides matter in a triangle?

Evaluation at the end of the activity

Students should be able to understand, if 3 corresponding sides of two triangles are same then the triangles are congruent.
Students should also understand that the sequence of sides examined in the triangles need not be same for the triangles to be congruent.

@@ Line 1: / Line 1: @@
-===Name of the activity===
+Investigating the possibility of congruence if three sides of two triangles are congruent.
-Brief blurb describing what the activity.  If this has been borrowed from some external web site (for example, a non OER or OER site which had this idea and based on which the activity was developed)
 === Objectives ===
-Content objectives  - what content areas
+Compare sides in triangles to check for congruence
-Skill objectives - what specific skills
-Classroom objectives - to demo peer learning, to make a classroom resource, etc -
-All these kinds of objectives need not be there for every activity.  And no need to list them as different headings.  This is only for our reference when we are developing activities.
 ===Estimated Time===
+minutes
 === Prerequisites/Instructions, prior preparations, if any ===
+Prior knowledge of point, lines, angles, closed figures
 ===Materials/ Resources needed===
+#Digital : Computer, geogebra application, projector.
+#Non digital : Worksheet and pencil, triangles of same and different shapes
+#3. Geogebra files : 	“'''[https://ggbm.at/pm6ecjsd SSS congruence.ggb]'''”
+{{Geogebra|pm6ecjsd}}
 ===Process (How to do the activity)===
-How to do the different steps of the activity?
+Prior hands on activity
+*Three	triangles are distributed to groups of students.
-What kinds of questions you can ask for that activity
+*Children	should identify 	the triangles that	are	congruent.
+*They	can name	the vertices in the given triangles.
-What are the student follow-up activities/ questions you can give?
+*Write	down the sides and	angles that	are coinciding in the two triangles.
+Use	the geogebra file
-Categories:  (Subject) (Topic) (Sub-concept/topic) (Class 6) (Resource format)
+*How	many triangles you observe?
+*Are	all the triangles same, point out the triangles that are same.
+*How	can you say they are same? What can you do to check if the two	triangles are congruent?
+*What	parameters of triangles are required to know if they are congruent?
+*What	about the third triangle is it the same as the other two, what you	should do to show the triangle is same as the others – concept pf	reflection can be discussed
+HW:
+*Make		two triangles of same sizes. Cut it and verify they are congruent.
+*Construct		one triangle – Base = 3, 4 and 5 are other sides.  Another		triangle base = 5; and two sides are 3 and 4. Another triangle base		= 4; and two sides are 3 and 5. Does the order of sides matter in a		triangle?
+'''Evaluation	at the end of the activity'''
+*Students		should be able to understand, if 3 corresponding sides of two		triangles are same then the triangles are congruent.
+*Students		should also understand that the sequence of sides examined in the		triangles need not be same for the triangles to be congruent.
-Example -  (Mathematics) (Triangle) (Area) (Perimeter) (Class 6) (Class 8) (Geogebra) (Video)
+[[Category:Triangles]]
+[[Category:Class 8]]