Math Unit 7 Vocabulary

What is a point?

• A straight figure with one starting point that continues endlessly

• A location in space represented by a dot and capital letter

• A part of a line with two defined endpoints

• A tool for measuring angles

What is a ray?

• A straight figure with one starting point that continues endlessly

• A location in space represented by a dot and capital letter

• A part of a line with two defined endpoints

• A tool for measuring angles

What is a line segment?

• A straight figure with one starting point that continues endlessly

• A location in space represented by a dot and capital letter

• A part of a line with two defined endpoints

• A tool for measuring angles

What is an angle?

• Formed when two rays meet at the same endpoint

• A location in space represented by a dot and capital letter

• A part of a line with two defined endpoints

• A tool for measuring angles

What is an acute angle?

• Measures less than 90 degrees

• Measures more than 90 but less than 180 degrees

• Measures exactly 180 degrees

• Measures exactly 90 degrees

What is an obtuse angle?

• Measures less than 90 degrees

• Measures more than 90 but less than 180 degrees

• Measures exactly 180 degrees

• Measures exactly 90 degrees

What is a straight angle?

• Measures less than 90 degrees

• Measures more than 90 but less than 180 degrees

• Measures exactly 180 degrees

• Measures exactly 90 degrees

What is a right angle?

• Measures less than 90 degrees

• Measures more than 90 but less than 180 degrees

• Measures exactly 180 degrees

• Measures exactly 90 degrees

What are perpendicular lines?

• Intersect to create 90 degrees angles

• Two angles sharing the same vertex

• The sum of the angles is 180 degrees

• A round shaped figure with no corners

What is a circle?

• A location in space represented by a dot

• A round shaped figure with no corners or edges

• A part of a line with two defined endpoints

• A tool for measuring angles