Determine if the two triangles are congruent.

ASA

Step-by-step explanation:  

1: Congruent with an angle of the other triangle. (Check the number of angle markings.) [A]

2: Congruent with a side of the other triangle. [S]

3: Congruent with an angle of the other triangle. (Check the number of angle markings.) [A]

You can match what you have with your answer choices.

A: Angle

S: Side

3x+9+4x+x=8x+9that's the answer for your question.

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)