Similarity
Similar Triangles
Solve It!
Proofs
Wild Card
100
How can we tell if two triangles are congruent or similar?
Congruent - same shape, same size
Similar - same shape, different size
100
What are the 3 similarity proof reasons?
SSS, SAS, AA
100
Solve the proportion
x/3 =28/7
x=12
100
What do all proofs start with?
Given information
100
+100 points for your team!
Chance!
200
If triangle HOP is similar to triangle ILY, which side of ILY would correspond with PO?
YL
200
Write the similarity statement
angle X cong angle M
anglez cong angleo
triangleXYZ ~ triangleMNO
200
Solve the proportion
(20+x)/20=15/12
x=5/4
200
When proving similar triangles,
Angles must be ....
and Sides must be ...
Angles must be congruent and sides must be proportional
200
What type of dog does Mrs. Harris have?
French bulldog and Australian Shephard
300
If triangle DEF is congruent to ABC, what angle corresponds with angle A?
A=D
300
Which similarity shortcut would you use to determine if the triangles are similar?
SAS
300
Find the perimeter of Triangle DEF
33
300
Proportional means that the sides have ...
the same scale factor
300
What color pants does Jake from State Farm wear?
Khakis
400
If the sides of triangle FED are 1 cm, 3 cm, and 8 cm, and the sides of triangle CBA are 3 cm, 9 cm, and 24 cm, are the triangles similar?
Yes
400
Determine if the triangles are similar
Yes by AA
400
Determine the length of the missing side
x = 12
400
Complete the proof table for parts (a), (b),and (c)
24/16=3/2
angleABC cong angle DFE
12/8=3/2
400
How many buildings was Rocky originally?
3
500
Given the figure GREAT with coordinates:
G(3,1);R(9,2);E(6,5);A(4,8);T(1,3)
what are the new coordinates if the SF=2
G'(6,2);
R'(18,4);
E'(12,10);
A'(8,16);
T'(2,6)
500
Determine if the triangles are similar
Yes, by AA, SAS, or SSS
500
If triangles ABC and DEF are similar and AB = 6, DE = 16, find BC if EF = 9.
3.375 or 27/8
500
Complete the proof table.
(a)
(Q'R')/(QR)=(R'S')/(RS)=(S'Q')/(SQ)=5/1
(b) corr. sides are proporitonal
(c) Dilation by SF of 5
500
What is the autumnal equinox?
Day and night are about the same