Answer:

Step-by-step explanation:
From the isosceles-base theorem, the measure of the angles adjacent to the pair of congruent sides of the triangle are equal. Since the problem declares
, the remaining unknown angles are equal (
). The sum of the interior angles of a triangle always add up to
.
Therefore:
.
Answer:

Step-by-step explanation:
Given:
Make the power of '10' equal by shifting the decimal place of any one value.

Taking the '
' common

Adding the values in the bracket gives:

Answer:
B
Step-by-step explanation:
These lines are parallel so they have no solutions