Answers.
1) 60 - this is an alternate interior angle to given 60* so it’s congruent, or the same, so it is also 60.
2) 30 - the given 60* and 2 make a right angle of 90*, so 90 - 60 = 30. It is also an alternate interior angle with given angle of 30, so it is congruent and also 30.
3) 30 - the triangle sum is 180, The interior angle at the bisect is 90, and the given angle of 60. 180 -90 -60 = 30
4) 60 - right angle sum of 3 and 4 is 90. 90 - 30 of angle 3 = 60
Step-by-step explanation
Rectangle angle rules
All the interior angles of a rectangle add up to 360°.
Each interior angle is equal to 90 degrees.
The diagonals bisect each other.