tuesday, october 1 st
DESCRIPTION
Tuesday, October 1 st. Warm Up. B. What are the five congruence proofs for triangles? Given ABC is similar to AKL, What is the perimeter of ABC?. K. 8. 5. 3. A. 5. C. L. Important. Test TOMORROW. CW Answers Study Guide Answers. Whiteboard Review. - PowerPoint PPT PresentationTRANSCRIPT
Tuesday, October 1st
1. What are the five congruence proofs for triangles?
2. Given ABC is similar to AKL, What is the perimeter of ABC?
Warm Up
K
L
B
CA 585 3
Important
Test TOMORROW
1. CW Answers 2. Study Guide
Answers
WhiteboardReview
Name the 5 congruent Postulates
SSSASA HL
AAS SAS
What 2 things must be true about similar
Triangles?
1. All corresponding angles are congruent
2. Corresponding side lengths are proportional
Are these Triangles similar? If so, name the
postulate.
Yes, AA
Name the 3 Similarity Postulates
SSSAA SAS
Statements Reasons1) 2) 3) B is the midpoint of
4)
5) DAEB DCBD
AE CBAB CD
ED
,AE CB AB CD Given:B is the midpoint of .
Fill out the five reasons!
ED
What is the final Reason (Hint: postulate)
Given:and
bisects
XT
.SXR
What angles should be congruent if the ACE is similar to BCD?A
B
CDe
Find the Scale Factor (Similarity Ratio)
12 in
8 in
15 in
10 in
U
W
V X
Z
Y
7.5
5
8.4
6
FIND ZY
What is this postulate for similarity?
A
B C
D
E F
Prove that RST~ PSQ
R
S
T
P Q
12
4 5
15 SS
reflexive
5
20
4
16
1
4
1
4
1. Two sides are proportional
2. Included angle is congruent
SAS~
SAS~
Find x
Complete the congruence statement. _____ CBD
MHQ is congruent to KHDFIND DK
36
7
Share a side
Reason: ____________property
Vertical Angles
Reason: __________________are congruent
What is the length of XZ if AB is (2x + 4)
x z
A B
C
A 5 ft lady casts a shadow that is 22 ft long. Her son is standing next to her and casts a shadow that is 10 ft long. How tall is her son?