Gr 9 MATH: Ch 8.2 Solving Problems
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Questions and Answers

What is the sum of two supplementary angles?

  • 360°
  • 90°
  • 180° (correct)
  • 270°

What is the measure of each angle when two lines intersect to form perpendicular lines?

  • 90° (correct)
  • 120°
  • 60°
  • 45°

What is the relationship between vertically opposite angles?

  • They are always unequal
  • They are always complementary
  • They are always equal (correct)
  • They are always supplementary

What is the sum of co-interior angles when a transversal intersects two parallel lines?

<p>180° (B)</p> Signup and view all the answers

What is the purpose of a protractor in drawing and interpreting graphs of angles and lines?

<p>To measure angles (A)</p> Signup and view all the answers

What type of angles are formed when a transversal intersects two parallel lines, and are equal?

<p>Corresponding angles (B)</p> Signup and view all the answers

What is the first step in drawing and interpreting graphs of angles and lines?

<p>Identify the lines and angles (C)</p> Signup and view all the answers

What is the characteristic of alternate angles when a transversal intersects two parallel lines?

<p>They are always equal (A)</p> Signup and view all the answers

When two lines intersect, what is the relationship between the angles formed?

<p>They are always vertically opposite. (B)</p> Signup and view all the answers

What is the purpose of identifying corresponding angles when a transversal intersects two parallel lines?

<p>To determine if the lines are parallel. (A)</p> Signup and view all the answers

If two angles are supplementary, what is the sum of their measures?

<p>180° (A)</p> Signup and view all the answers

What is the relationship between alternate angles when a transversal intersects two parallel lines?

<p>They are always equal. (C)</p> Signup and view all the answers

What is the sum of the measures of two co-interior angles when a transversal intersects two parallel lines?

<p>180° (B)</p> Signup and view all the answers

What is the characteristic of perpendicular lines?

<p>They intersect at a 90° angle. (D)</p> Signup and view all the answers

What is the purpose of measuring angles in a graph?

<p>To check their properties, such as equality of corresponding and alternate angles. (D)</p> Signup and view all the answers

What is the first step in determining relationships between angles in a graph?

<p>Identify the parallel lines and transversal. (B)</p> Signup and view all the answers

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