Are they congruent? If so, how do you know.

Explanation:

The marked angles in red are a congruent pair of angles. This forms the first "A" in "AAS".

The vertical angles are another pair of congruent angles. This is the other "A" in "AAS".

The tickmarks indicate those segments are the same length, so that forms the "S" in "AAS".

The sides are not between the angles mentioned for any given triangle, so we use AAS instead of ASA.

answer: 21$

step-by-step explanation:

$42 / $14 = 3   (ratio 3: 1)

$7 x 3 = $21

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