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Eighth Grade (Grade 8) Two Dimensional Shapes Questions

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Grade 8 Triangles
What is the longest side of a right triangle?
  1. leg a
  2. leg b
  3. hypotenuse
  4. right angle
Grade 8 Circles
Line AB is what part of a circle?
Circle with Diameter AB
  1. circumference
  2. radius
  3. diameter
  4. area
Grade 8 Triangles
How many degrees are there in a triangle?
  1. 90
  2. 360
  3. 45
  4. 180
Grade 8 Circles
What term is used to describe half of the diameter?
  1. radius
  2. half diameter
  3. quarter
  4. circumference
Grade 8 Triangles
In triangle ABC, angle A measures 84 degrees and angle C measures 48 degrees. What is the measurement of Angle B?
Acute Triangle ABC v2
  1. 48 degrees
  2. 180 degrees - 84 degrees
  3. 84 degrees
  4. 180 degrees - 48 degrees
Grade 8 Triangles
How many degrees are there in a triangle?
  1. 45
  2. 180
  3. 90
  4. 360
Grade 8 Other Polygons
A polygon with eight sides.
  1. octahedron
  2. octagon
  3. octangle
  4. octagram
  5. none of the above
Grade 8 Triangles CCSS: 8.G.A.5
The exterior angle of a triangle is equal to
  1. the value of its adjacent angle.
  2. the sum of its opposite interior angles.
  3. the product of its opposite interior angles.
  4. the difference between its opposite interior angles.
Grade 8 Triangles CCSS: 8.G.A.5
The measures of the angles in a right triangle are [math]x[/math], [math]2x[/math] and [math]90deg[/math]. What is [math]x[/math]?
  1. [math]15deg[/math]
  2. [math]30deg[/math]
  3. [math]45deg[/math]
  4. [math]60deg[/math]
Grade 8 Triangles CCSS: 8.G.A.5
What is the sum of the exterior angles of a triangle?
  1. [math]180deg[/math]
  2. [math]270deg[/math]
  3. [math]360deg[/math]
  4. [math]540deg[/math]
Grade 8 Triangles CCSS: 8.G.A.5
Which of the following statements about the exterior angle of a triangle is true?
  1. It is always equal to the value of its adjacent angle.
  2. It is always larger than either opposite interior angle.
  3. It is always larger than the sum of its opposite interior angles.
  4. It is always equal to the sum of the interior angles of the triangle.
Grade 8 Circles
How many degrees are in a circle?
  1. 360 degrees
  2. 180 degrees
  3. 90 degrees
  4. 45 degrees
Grade 8 Triangles CCSS: 8.G.A.5
What is the measure of one external angle of an equilateral triangle?
  1. [math]30deg[/math]
  2. [math]60deg[/math]
  3. [math]120deg[/math]
  4. [math]180deg[/math]
Grade 8 Triangles
How many degrees are there in a triangle?
  1. [math]90deg[/math]
  2. [math]45deg[/math]
  3. [math]180deg[/math]
  4. [math]360deg[/math]
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