Sheila drew the diagram below. Based on the diagram, which statement is true?
A The measure of an exterior angle of a triangle, angle is equal to the sum of the measures of the two
non-adjacent interior angles of the triangle, angle A and angle B.
B The sum of the measures of the interior and exterior angles of a triangle is always 180°
c The measure of an exterior angle of a triangle, angle C is less than the sum of the measures of the two
non-adjacent interior angles of the triangle, angle A and angle B.
D The sum of the measures of the interior and exterior angles of a triangle is always 360°.

B

Both the exterior and interior angles are on the same line, and, as such, should add up to 180°

congruent segments

step-by-step explanation:

answer: a video game has three difficulty levels: easy, medium, and expert. the game's scoring works in such a way that a player has to score a fixed number of points to advance to the next level, and then the scoring starts over. the total score needed to clear all three difficulty levels is 7,500. two times the number of points needed to clear the easy level is 500 more than the number of points needed to clear the medium level. twice the number of points needed to clear the medium difficulty level is 1,500 more than the number of points needed to clear the expert level. if x, y, and z represent the easy, medium, and expert levels, respectively, and a is the coefficient matrix of the system of equations modeling this situation, identify the inverse matrix, a-1, and the solution matrix, x, of the system of equations.

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