Chap 11 - Pythagoras, Similarity, Congruency

Question 1

formula for Pythagoras

Answer 1

-a^2 + b^2 = c^2
-only in right angel

Question 2

define similar

Answer 2

-same angles = in ratio to each other

Question 3

define congruent

Answer 3

-same angles and sides = identical

Question 4

note: put same dimensions in ratio
1D/ 1D, 2D/ 2D, 3D/ 3D

Question 5

how to change ratio of 1D to 2D / 3D

Answer 5

-2D = ^2
-3D = ^3

Question 6

how to change 2D / 3D to 1D

Answer 6

-2D = √
-3D = ∛

Question 7

how to change 2D / 3D to 2D / 3D

Answer 7

-change one side to 1D then to the same D

Question 8

congruency tests

Answer 8

(S = side, A = angle)
-SAS
-ASA
-SSS
-AAA
-RHS = Right angle, hypotenuse, S

Question 9

What is 1D, 2D, 3D

Answer 9

-1D = length
-2D = area
-3D = volume

Question 10

what happens to area of length is x2 / x3

Answer 10

-x2 = x4 area
-x3 = x9 area

Question 11

how to write congruency statement

Answer 11

• (shape) ≅ (shape)