Answer:
The SAS Postulate.
Step-by-step explanation:
In the diagram, the two triangles are congruent. This is because there are two pairs of congruent sides, with a congruent angle in between. The two angles between the sides are congruent because of the Vertical Angle Theorem.
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Option A, because you split the (2x + 3) into 2x and 3.
Answer: The expression is undefined for x=4 and x=5.
The expression is undefined for any x that makes the denominator 0. This leads to solving a quadratic equation:

Answer:
The slope is 1 and the y intercept is 1
No a polygon only has 3 sides and 3 angles.