Algebra
4x = 20
then
x = 5
this is the number of degrees in a straight angle
What is 180 degrees
On the right side of the proof, 1 is always _______.
What is given
32 = x
so...
x = 32
What is "Symmetric P.O.E."
Based on picture A, what Reason can I write?
What is "definition of vertical angles"
1. 4(x-3) = 5x-20 l 1. given
2. 4x-12 = 5x-20 l 2. ________
What is "Distributive Property"
This term means the angles form a straight line
What is a linear pair
Complete the statement below.
2. ∠T ____ ∠S l 2. def. of vertical angles
What is " ≅ "
AC + BD = 180
EF + GH = 180
then
AC + BD = EF + GH
What is "substitution property or transitive property"
What reason can I write based on picture B?
1. 11x-20 = 4x+50 l 1. given
2. 7x-20 = 50 l 2. ___________
What is "Subtraction P.O.E."
This term means the angles add up to 180 degrees
What is supplementary
1. ∠R and ∠T are supplementary. l 1. given
2. _____________________ l 2. Def. of supplementary
what is " m∠R + m∠T = 180"
AC = AC
What is "reflexive property"
Based on Picture C, what statement and reason can I write?
What is "2. ∠3 and ∠4 are supplementary l 2.def. of a linear pair "
If 5x+14 and x = 3, then 5(3)+14
This term means that angles together add up to 90 degrees
What is complementary
What statement comes next if this is written :
∠ABC ≅ ∠LMN
m∠ABC = m∠LMN
Which mathematical reasons need to have "Property of Equality"
What is " Addition, Subtraction, Multiplication, Division"
Based on Picture D, I can write what statement and reason?
What is "2. ∠5 ≅ ∠7 l 2. def. of vertical angles"
These angles across from each other are formed by two intersecting lines
What are vertical angles
What is the reason for this statement?
1. ∠ABC ≅ ∠DEF l 1. Given
2. m∠ABC = m∠DEF l 2. __________
What is definition of congruent
∠ABC + ∠MLP = ∠ABC + ∠STR
Then
∠MLP = ∠STR
What is " Subtraction P.O.E."