The isosceles triangle has two sides congruent which mean they are equal. If two sides are equal, it also means that two angles are equal.
For triangle XYZ, we have angles shown below:
∠X + ∠Y + ∠Z = 180°
If ∠Y = a°, then we can have the expression for ∠X such as shown below:
∠X + a° + ∠Z =180°
∠X= 180° - a° - ∠Z
If ∠Z = ∠Y, then we have the final expression:
∠X = 180° -2a°
Can you be more specific pls
Answer:
Associative Property
Commutative Property
Distributive Property
Identity Property
Step-by-step EXPLANATION
ASSOCIATIVE PROPERTY
In this property, irrespective of the regrouping between a number and the addent within a bracket, the sum, value does not change.
For example:
(A + B) + C = A + ( B + C)
COMMUTATIVE PROPERTY
In commutative Property, you will always get thesame results after changing the order or position of the addent.
For example:
A + B = A + B
Also,
A + B = B + A
DISTRIBUTIVE PROPERTY
Basically here, please note that, the sum (addition) of two numbers times a Third one is always equal to the sum of these numbers times the third one.
For Example:
A x (B + C) = AB + AC
IDENTITY PROPERTY
This property is the easiest of all, it simply says that "Add a number to Zero must always be that number".
For example:
A + 0 = A
B + 0 = B
C + 0 = C
HOPE THIS HELPED!
T-2(3-2t)=2t+9
t-6+4t=2t+9
5t-6=2t+9
5t-2t=9+6
3t=15
t=15/3
t=5
