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Ninth Grade (Grade 9) Angles Questions

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Grade 9 Angles
An angle that measures 90 degrees.
  1. acute
  2. complementary
  3. isosceles
  4. right
  5. none of the above
Grade 9 Angles
To divide a figure into two congruent parts.
  1. bisect
  2. disect
  3. perpendiculate
  4. divide
Grade 9 Angles
Angles that have the same measure and are the same size.
  1. obtuse
  2. twin
  3. congruent
  4. acute
Grade 9 Angles CCSS: HSG-CO.A.1
When lines intersect to form a right angle.
  1. parallel
  2. skew
  3. perpendicular
  4. bisecting
Grade 9 Angles
In triangle ABC, angle A = 50 degrees and angle C = 50 degrees. What can we tell about this triangle?
Isosceles Triangle Height v2
  1. angle B = 80 degrees
  2. side AC = side BC
  3. side AB = side BC
  4. both a and c
Grade 9 Angles
What is the interior angle measure of a regular pentagon?
  1. 108o
  2. 90o
  3. 540o
  4. 360o
Grade 9 Angles
What is the included angle of ¯AD and ¯CD?
Trapezoid ABCD
  1. ∠A
  2. ∠B
  3. ∠C
  4. ∠D
Grade 9 Angles
Which is a reflex angle?
  1. 12°
  2. 178°
  3. 238°
  4. 168°