Angle Types
Parallel Lines
Angle Relationships
Angle Measures
Real Life Applications
100

 An angle whose measure is less than 90 degrees.

What is an acute angle?

100

Lines that are always the same distance apart and never intersect.

What are parallel lines?

100

Opposite angles when two lines intersect.

What are vertical angles?

100

Degrees.

What is the unit used to measure an angle?
100

Intersecting streets, parking spaces, on ramps to freeways, bridges, driveways, etc

What are angle relationships in roads / streets / pavements, or a city?

200

An angle whose measure is 90 degrees.

What is a right angle?

200

A line that cuts across 2 or more lines.

What is a transversal?

200

Two non-overlapping angles that share a vertex and a side.

What are adjacent angles?

200

The sum of these three angles is 180 degrees.

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

200

Building stable structures, aesthetic design, roof slopes, load-bearing structures, complex shapes, stairwells, etc.

What are angle relationships in architecture or construction?

300

Angle whose measure is greater than 90 degrees.

What is an obtuse angle?

300

When two lines are cut by a transversal, a pair of angles on opposite sides of the transversal and between the two lines.

What are alternate interior angles?

300

Two angles that are adjacent and supplementary.

What is a linear pair?

300

The two angle relationships that are formed when two lines intersect?

What are vertical angles and linear pairs?

300

Determining trajectory, optimizing ball passes, controlling direction, launch angle, court positioning, field position, passing lanes, offensive angles, etc.

What are angle relationships in (playing) sports?

400

Two angles whose sum measures to 90 degrees.

What are complementary angles?

400

When two lines are cut by a transversal, a pair of angles in the same relative position.

What are corresponding angles?

400

Two angles that have exactly the same measurement?

What are congruent angles?

400

When parallel lines are cut by a transversal, the relationship of alternate interior angles, alternate exterior angles, and corresponding angles.

What are congruent angles?
400

Used to determine direction, calculate distances, plot courses, mapping and positioning, celestial navigation, etc. 

What are angle relationships in navitgation or mapping?

500

Two angles whose sum measures 180 degrees.

What are supplementary angles?

500

When two lines are cut by a transversal, a pair of angles on the same side of the transversal and between the two lines.

What are same-side interior angles? or What are consecutive interior angles?

500

When two lines are cut by a transversal, a pair of angles on opposite sides of the transversal and on the outside of the two lines.

What are alternate exterior angles?

500

When parallel lines are cut by a transversal, the relationship of same-side interior angles and same-side exterior angles.

What are supplementary angles?

500

Used to create perspective, imagery, proportion, balance, emotional impact, illusion of depth, feeling of movement, action, symmetry, balanced compositions, etc.

What are angle relationships in art?