I got 665 but I was typing pretty fast so sorry if it’s not right. That is if you mean add every number together like 1+2+3+4.....
∠A, ∠B, ∠C - interior angles of a triangle.
∠A 1 , ∠B 1 , ∠C 1 - exterior angles of a triangle.
∠A + ∠B + ∠C = 180°
∠A + ∠A 1 = 180°
Therefore: ∠A 1 = ∠B + ∠C ( two remote interior angles )
Answer:
An exterior angle of a triangle is equal to the sum of the two remote interior angles.
Answer:
12m is the correct answer because yes friend
The diagram is attached in the image
Answer:
The value of x = 2.
The value of y = 1.
Step-by-step explanation:
The length of opposite sides of a parallelogram are equal.
Hence, the length of 4x - 3 and x + 3 are equal.
Similarly, the lengths of 3y and 5y - 2 are equal.



And 


Therefore, the values of x and y are: 2; 1 respectively.