Geometry Definitions
  • 1. acute triangle
A) the sum of all the angles is less than 90 degrees
B) all angles measure more than 90 degrees
C) has one obtuse angle
D) all angles measure less than 90 degrees
  • 2. acute angle
A) less than 90 degrees
B) exactly 180 degrees
C) exactly 90 degrees
D) more than 90 degrees
  • 3. obtuse angle
A) measures 180 degrees
B) measures more than 90 degrees, but less than 180 degrees
C) measures less than 90 degrees
D) measures exactly 90 degrees
  • 4. obtuse triangle
A) has two obtuse angles
B) the sum of all three angles equals 105 degrees
C) has one obtuse angle
D) has no obtuse angles
  • 5. right angle
A) measures less than 90 degrees
B) measures 180 degrees
C) measures more than 90 degrees
D) measures exactly 90 degrees
  • 6. right triangle
A) has two right angles
B) the sum of all three angles equals 90 degrees
C) has one right angle
D) has no right angles
  • 7. straight angle
A) measures more than 180 degrees
B) measures less than 180 degrees
C) the sum of the length of the angles equals 180 degrees
D) exactly 180 degrees
  • 8. equilateral triangle
A) all sides are the same length
B) no sides are the same length
C) only 2 sides are the same length
D) has 4 sides
  • 9. isosceles triangle
A) no sides are the same length
B) a new sauce for your chicken nuggets
C) two or more sides are the same length
D) has 5 sides
  • 10. scalene triangle
A) exactly two sides are the same length
B) no sides are the same length
C) all sides are the same length
D) two or more sides are the same length
  • 11. triangle
A) polygon with three sides
B) polygon with six sides
C) polygon with four sides
D) polygon with five sides
  • 12. angle
A) always exactly 90 degrees
B) something that has wings
C) a polygon
D) two rays having a common endpoint
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