Urgent! will mark brainliest! lamar wanted to explain why the measure of angle 5 is equal to the sum of the measures of angles 1 and 3. which geometry concepts should be used in lamar’s work? a) supplementary angles and the sum of the measures of interior angles of a triangle b) complementary angles and the sum of the measures of interior angles of a triangle c) supplementary angles and vertical angles d) the sum of the measures of interior angles of a triangle and vertical angles