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From Karnataka Open Educational Resources
Similar and congruent triangles (view source)
Revision as of 07:07, 30 December 2013
, 07:07, 30 December 2013→Activity No # 1. Congruency tests
*Website interactives/ links/ / Geogebra Applets
*Website interactives/ links/ / Geogebra Applets
*Process:
*Process:
# The teacher can use this geogebra file to explain and clarify the "tests for congruency".
# The teacher can use this geogebra file to explain and clarify the "tests for congruency" by moving the sliders.
*Developmental Questions:
*Developmental Questions:
*Evaluation
# What does congruent mean ?
# What are congruent triangles ?
# Name the elements of triangles ? How may are they ?
# Do we have to know all six element measures to find if triangles are congruent ?
# How can we find out ?
# What are the angle measures of the two triangles ?
# What measures are their sides ?
# On what basis are we here knowing that the two triangles are congruent ?
# What can this postulate be called ?
# Recall the term postulate ?
# In how many ways can we prove that the triangles are congruent ?
*Evaluation:
# List the congruency postulates.
*Question Corner:
*Question Corner:
# Why SSA and AAA doesn't work ?
# Why SSA and AAA doesn't work ?
