Lines and angles
Types of exercises: corresponding, alternate, vertically opposite angles and angles on a line, finding an angle at parallel lines, angles at parallel lines - two steps.
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What are the marked angles α and β called?
Lines k and l are parallel, and line m crosses both of them.
Problem
Lines k and l are parallel, and line m crosses both of them. How many degrees is the angle marked with a question mark?
Problem
Lines k and l are parallel, and line m crosses both of them. How many degrees is the angle marked with a question mark?
What are the marked angles α and β called?
Lines k and l are parallel, and line m crosses both of them.
Problem
Lines k and l are parallel, and line m crosses both of them. How many degrees is the angle marked with a question mark?
Problem
Lines k and l are parallel, and line m crosses both of them. How many degrees is the angle marked with a question mark?
What are the marked angles α and β called?
Lines k and l are parallel, and line m crosses both of them.
Problem
Lines k and l are parallel, and line m crosses both of them. How many degrees is the angle marked with a question mark?
Problem
Lines k and l are parallel, and line m crosses both of them. How many degrees is the angle marked with a question mark?
What are the marked angles α and β called?
Lines k and l are parallel, and line m crosses both of them.
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