Name: ____________________________________________________________ Period:____________
Formal Geometry 2016-2017 [email protected] MrsRevillezaMath.weebly.com
Chapter 4 Pages 232 - 317 Geometry – Glencoe McGraw-Hill (Red Textbook)
4.1: Classifying Triangles
“I can classify triangles by sides and angles.”
“I can find angle measures inside triangles.”
Classifying Triangles by SIDES
Classifying Triangles by ANGLES
2
3
Daily Proofs
4
4.1: Classifying Triangles HOMEWORK
Page 239 – 240 #22, 24, 30, 32, 36, 50
#22 `#24
#30 #32
#36 #50
5
4.2: Angles of Triangles
“I can apply the Triangle Angle-Sum Theorem.”
“I can apply the Exterior Angle Theorem.”
Theorem List
Theorem 4.1 - Triangle Angle-Sum Theorem
Theorem 4.2: Exterior Angle Theorem
6
Triangle Angle-Sum Corollaries
4.1
4.2
7
Daily Proofs
8
4.2: Angles of Triangles HOMEWORK
Page 249 – 251 #20 – 26 even, 30, 32
#20 `#22
#24 #26
#30 #32
9
4.3: Congruent Triangles
“I can identify congruent triangles and corresponding parts.”
New Vocabulary
Congruent Polygons Corresponding Parts
Theorem 4.3: Third Angles Theorem
Theorem 4.4: Properties of Triangles Congruence Reflexive Property of Triangle Congruence Symmetric Property of Triangle Congruence Transitive Property of Triangle Congruence
CPCFC
Corresponding Parts of Congruent Figures are Congruent
CPCTC
Corresponding Parts of Congruent Triangles are Congruent
10
11
Daily Proofs
12
4.3: Congruent Triangles HOMEWORK
Page 257 – 259 #10-16 even & 20-22 even
#10 #12
#14 #16
#20 #22
13
4.4: Proving Triangles Congruent – SSS, SAS
“I can decide whether two triangles are congruent using 2 important theorems.”
POSTULATE 4.1 POSTULATE 4.2
SSS SAS
14
15
Daily Proofs
16
4.4: Proving Triangles Congruent – SSS, SAS HOMEWORK
Just do EVENS
17
4.5: Proving Triangles Congruent – ASA, AAS
“I can decide whether two triangles are congruent using 2 (MORE) important theorems.”
POSTULATE 4.3 THEROREM 4.5 THEROEM 4.9
ASA AAS HL
18
19
Daily Proofs
20
Proving Triangles Congruent – ASA, AAS HOMEWORK
PICK evens or
odds
21
4.6: Isosceles and Equilateral Triangles
“I can use the properties of an isosceles triangle.”
“I can use the properties of an equilateral triangle.”
New Vocabulary
Isosceles Triangle –
Legs –
Base –
Vertex Angle –
Base Angles –
THEROREM 4.10: ISOSCELES TRIANGLE THEOREM
THEROREM 4.11: CONVERSE OF ISOSCELES TRIANGLE THEOREM
22
EAQULATERAL TRIANGLE COROLLARIES
4.3 4.4
23
Daily Proofs
24
4.6: Isosceles and Equilateral Triangles HOMEWORK
Page 288 – 289 #16-22 even 38
#16 #18
#20 #22
#38
We’re done with the unit!!
Time to REVIEW.
