Download Warm up 10/08/15 Thursday

Warm up 10/09/15 Friday
1. The three angles in a triangle should add up
to _______degrees.
2. When two triangles are congruent, the
measurement of the three ______ and the
three _______ are congruent.
1. Create triangle ABC and triangle DEF that are
congruent with its side measurements and
angle measurements. Label its vertices.
Triangle Activity Pre lesson notes
EQ: How do you know when two triangles are
congruent?
Introduction before the activity:
Know what SSS, SAS, SSA, AAS, ASA, AAA, HL is.
Warm up 10/13/15 Tuesday
• Draw a pair of triangles for each conditions
SSS
ASA
AAA
SAS
AAS
SSA
HL
Extra
space…
Activity 11 part 1: Congruence
Transformations and Triangle Congruence
EQ: How do you label and solve the missing
sides and angles of congruent triangles?
Sub EQ1: How do you label and name the
corresponding vertices, sides, and angles?
DABC @ DDEF
Sub EQ2: How do you solve for the missing sides
and the angles of the congruent triangles?
DABC @ DDEF
Ex1. If AB = 24 and Angle D = 25 degrees, what can
you label?
Ex2. If Angle C = 50 degrees and angle E = 40
degrees, what can you label?
Sub EQ3: How do you write the congruence
criterion, if any, that can be used to show the
triangles are congruent?
What’s due?
• Pg. 165 #1-10
Warm up 10/15/15 Thursday
1. Given: AB || DC
B
A
AD || CB
Prove:
DABC @ DCDA
C
D
E
2. Given: EJ is the
segment bisector of HF;
EF || JH
Prove: DEGF @ DJGH
H
G
F
Some Word Bank for the Reasons: Given, Definition of ______,
Alternate Interior Angles Theorem, Vertical Angles Theorem,
Reflexive Property
J
Essential Question of the day:
How do you use two column proofs to
prove that two triangles are
congruent?
• You will need to know the 5 congruent triangle
criteria.
• SSS, SAS, ASA, AAS, HL
Closing Questions
• What are some properties or theorems that we
used besides the 5 congruence criteria?
• What are some common mistakes?
• What were the 5 congruence criteria?
• Quiz Tomorrow!
– Know your 5 triangle congruence criteria,
– Solving for the missing corresponding sides or angles
– Two column proof!
What’s due?
• Pg. 166 #12-16
• Instead of summary, write down what you
should be careful of when you’re doing your
two column proofs (minimum 5 sentences)
Warm Up 10/16/15 Friday
• Use two column proofs to prove that the given
two triangles are congruent.