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Geometry Vocabulary
Math- Chapter 10
Question | Answer |
---|---|
angle | formed by 2 lines with a common endpoint |
vertex | the point were two sides or line meet |
exterior | on the outside of an angle |
interior | on the inside of an angle |
protractor | a tool used to measure angles |
degrees | the symbol used to write the measurement of an angle |
acute angle | an angle measuring less than 90 degrees |
right angle | an angle measuring exactly 90 degrees |
obtuse angle | an angle measuring more than 90 degrees, but less than 180 degrees |
polygon | closed plane figures made up of line segments called sides |
congruent polygons | exactly the same size and shape |
corresponding parts | matching sides or angles |
similar polygons | have the same shape |
scalene triangle | triangle with no sides congruent |
isosceles triangle | triangle with 2 sides congruent |
equilateral triangle | all sides of the triangle are congruent |
acute triangle | triangle with 3 acute angles |
right triangle | triangle with 1 right angle and 2 acute angles |
obtuse triangle | a triangle with 1 obtuse angle and 2 acute angles |
quadrilateral | a 4 sided polygon |
straight angle | an angle measuring exactly 180 degrees |