Answer:
5. 1=112º
5. 2=68º
5. 3=112º
6. 1=45º
6. 2=45º
6. 3=135º
Step-by-step explanation:
5. 1 is a vertical angle to 112º, so they are equal (1 is obtuse)
5. 2 and 112º form to create a straight angle (line/180º) (supplementary angles) so subtracting the known number (112) from the total (180) gives you the number of the missing angle (2 is acute)
5. 3 is the same as 1 (3 is obtuse)
6. 1 and 45º are equal to each other (1 is acute)
6. 2 and 1 and 45º are equal and vertical angles (2 is acute)
6. 3 and 45º form to create a straight angle (line/180º) (supplementary angles) so subtracting the known number (45) from the total (180) gives you the number of the missing angle (3 is obtuse)
