Unit 6 Vocabulary Flashcards
A figure formed by two rays with the same endpoint
Angle
An angle whose measure is less than 90 degrees
Acute angle
Figures with the same size and shape
Congruent
A unit used to measure angles
Degrees
A triangle with three sides of the same length
Equilateral triangle
A triangle with at least two sides of equal length
Isosceles triangle
An angle whose measure is between 90 degrees and 180 degrees
Obtuse angle
A closed figure that is formed by three or more segments called sides
polygon
A semicircular tool used to measure degrees
Protractor
A plane closed figure formed by four sides
Quadrilateral
A part of a line that has one endpoint and extends without end in one direction
Ray
A polygon with equal side lengths and equal measures
Regular polygon
An angle who’s measure is exactly 90 feet
Right angle
A triangle with different side lengths
Scalene triangle
An angle who’s measure is exactly 180 degrees
Strait angle
