Angles and Lines Challenge

What type of angle measures less than 90 degrees?

• straight angle

• obtuse angle

• right angle

• acute angle

Identify the type of angle that is exactly 90 degrees.

• Right angle

• Straight angle

• Obtuse angle

• Acute angle

What do you call an angle that measures more than 180 degrees?

• Reflex angle

• Obtuse angle

• Acute angle

• Straight angle

Using a protractor, how would you measure a 45-degree angle?

• Place the protractor upside down and measure from the bottom edge.

• Use a ruler to draw a line at a 45-degree angle without the protractor.

• Align the protractor with the top of the angle and read the 90-degree mark.

• To measure a 45-degree angle using a protractor, align the protractor's baseline with one side of the angle and mark the 45-degree point.

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

• 45 degrees

• 180 degrees

• 60 degrees

• 90 degrees

Calculate the measure of an angle if it is supplementary to a 120-degree angle.

• 30 degrees

• 150 degrees

• 60 degrees

• 90 degrees

What is the relationship between two parallel lines cut by a transversal?

• The alternate interior angles are equal.

• The exterior angles are equal.

• The sum of the interior angles is 180 degrees.

• The corresponding angles are equal.

If two angles are alternate interior angles, what can you say about their measures?

• The measures of alternate interior angles are always different.

• The measures of alternate interior angles are equal.

• The measures of alternate interior angles are supplementary.

• The measures of alternate interior angles are complementary.

How do you determine if two lines are parallel using angles?

• Two lines are parallel if they are both vertical.

• Two lines are parallel if they have different slopes.

• Two lines are parallel if corresponding angles or alternate interior angles are equal.

• Two lines are parallel if they intersect at a right angle.

What is the sum of the interior angles of a triangle?

• 180 degrees

• 360 degrees

• 120 degrees

• 90 degrees