math

• What do angles on a straight line always add up to?

  180 degrees
• If an acute angle is 30 degrees, what is the obtuse angle on the same straight line?

  150 degrees
• How do you find the size of an obtuse angle if you know the acute angle is 30 degrees?

  Subtract 30 degrees from 180 degrees
• What is the calculation to find angle X if the acute angle is 30 degrees?

  180 degrees - 30 degrees = X
• What is the value of angle X if the acute angle is 30 degrees?

  150 degrees
• How can you check if the calculated angle X is correct?

  Add angle X to the acute angle and see if it equals 180 degrees
• If the obtuse angle is 117 degrees, how do you find angle X?

  Subtract 117 degrees from 180 degrees
• What is the calculation to find angle X if the obtuse angle is 117 degrees?

  180 degrees - 117 degrees = X
• What is the value of angle X if the obtuse angle is 117 degrees?

  63 degrees
• How can you verify the value of angle X when it is 63 degrees?

  Add 63 degrees to 117 degrees and check if it equals 180 degrees
• How do you find angle X when you have three angles: 58 degrees, X, and 43 degrees?

  Add 58 degrees and 43 degrees, then subtract from 180 degrees
• What is the calculation to find angle X if the other two angles are 58 degrees and 43 degrees?

  180 degrees - (58 degrees + 43 degrees) = X
• What is the sum of 58 degrees and 43 degrees?

  101 degrees
• How do you find angle X after calculating the sum of 58 degrees and 43 degrees?

  Subtract 101 degrees from 180 degrees
• What is the value of angle X if the sum of the other two angles is 101 degrees?

  79 degrees
• How can you verify the value of angle X when it is 79 degrees?

  Add 58 degrees, 79 degrees, and 43 degrees to check if it equals 180 degrees
• How do you find angle X when you have a right angle and an angle of 38 degrees?

  Add 38 degrees and 90 degrees, then subtract from 180 degrees
• What is the calculation to find angle X if one angle is 38 degrees and the other is a right angle?

  180 degrees - (38 degrees + 90 degrees) = X
• What is the sum of 38 degrees and 90 degrees?

  128 degrees
• How do you find angle X after calculating the sum of 38 degrees and 90 degrees?

  Subtract 128 degrees from 180 degrees
• What is the value of angle X if the sum of the other two angles is 128 degrees?

  52 degrees
• How can you verify the value of angle X when it is 52 degrees?

  Add 38 degrees, 52 degrees, and 90 degrees to check if it equals 180 degrees
• What do angles ABC on a straight line add up to?

  180 degrees
• How do you find the value of angle X if angle A is 65 degrees?

  Subtract 65 degrees from 180 degrees
• What is the calculation to find angle X if angle A is 65 degrees?

  180 degrees - 65 degrees = X
• What is the value of angle X if angle A is 65 degrees?

  115 degrees
• How can you verify the value of angle X when it is 115 degrees?

  Add 65 degrees to 115 degrees to check if it equals 180 degrees
• What must be true for angles D, E, and F to be a straight line?

  The sum of angles D and E must equal 180 degrees
• How do you determine if angles D and E form a straight line?

  Add angles D and E and check if the sum is 180 degrees
• What is the sum of angles 95 degrees and 83 degrees?

  178 degrees
• What conclusion can be drawn if the sum of angles D and E is 178 degrees?

  D E F is not a straight line
• What is the key takeaway about angles on a straight line?

  They always add up to 180 degrees
• What do parallel lines look like in diagrams?

  They are shown by little arrows.
• What is a transversal?

  A transversal is a straight line that cuts across parallel lines.
• What are alternate angles?

  Alternate angles are angles that are the same size when formed by a transversal cutting parallel lines.
• What is another name for alternate angles?

  Some people call them Z angles.
• How can you identify alternate angles in a diagram?

  They can be identified by drawing a Z shape through the angles.
• What is the proper name for angles that are the same size when formed by a transversal cutting parallel lines?

  They are called alternate angles.
• What are corresponding angles?

  Corresponding angles are angles that are in the same position relative to the parallel lines and transversal.
• What is another name for corresponding angles?

  Some people call them F angles.