Show:
Who am I?
What's my complement?
What's my supplement?
True or False
Angle Definitions
100
a right angle
What is an angle whose degree measure is exactly 90?
100
40 degrees
What is 50 degrees?
100
100 degrees
What is 80 degrees?
100

If two lines intersect, then they intersect in two places

What is FALSE?

Lines that intersect, intersect at ONE point

100
angles that add up to 90 degrees
What are complementary angles?
200
an acute angle
What is an angle whose degrees measure is less than 90?
200
60 degrees
What is 30 degrees?
200
60 degrees
What is 120?
200

Congruent angles are angles that have equal measures

What is TRUE?

Congruent angles are angles that have the same measure. This means that if two angles are congruent, their measures are equal.

200
angles that add up to 180 degrees
What are supplementary angles?
300
an obtuse angle
What is an angle whose degree measure is greater than 90 and less than 180?
300
37 degrees
What is 53 degrees?
300
47 degrees
What is 133 degrees?
300

Perpendicular lines form congruent adjacent angles

What is TRUE?

Perpendicular lines are two lines that intersect at a right angle. When two lines are perpendicular, they form congruent adjacent angles. This means that the angles formed on either side of the intersection point are equal in measure.

300

bow tie angles are congruent because they are opposite when two lines intersect and only their vertices touch, are also called this

What are vertical angles?

400
a straight angle
What is an angle whose degrees measure is exactly 180 and forms a straight line?
400

2 degrees

What is 88 degrees?

400
90 degrees
What is 90?
400

Angles formed by a transversal and two parallel lines are either complementary or congruent.

What is FALSE?

Angles formed by a transversal and two parallel lines can have various relationships, including being supplementary, congruent, or neither. The angles can also be alternate interior angles, alternate exterior angles, corresponding angles, or vertical angles.


400
angles that are next to each other are called this
What is adjacent?
500

a transversal

What is a line that cuts across two parallel lines?

500

x

What is 90 - x?

500

x

What is 180 - x?

500

If vertical angles are acute, the adjacent angle to them must be obtuse.

What is TRUE?

Vertical angles are formed when two lines intersect. By definition, vertical angles are congruent, meaning they have the same measure. If vertical angles are acute, it means they have a measure less than 90 degrees. Since vertical angles are congruent, both angles must have a measure less than 90 degrees. If one of the vertical angles is acute, the other angle must also be acute. Therefore, the adjacent angle to the vertical angles must be obtuse, as the sum of the measures of adjacent angles is always 180 degrees.

500

Angles that are congruent, that are on the inside of two parallel lines on opposite sides of the transversal. 

What are alternate interior angles?