Lesson 28 Vocabulary

What are adjacent angles?

• Two angles whose measures sum to 90°

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

• An angle that measures 180°

• Opposite angles formed when two lines intersect

What is the sum of complementary angles?

• 180°

• 90°

• 360°

• 45°

What is a straight angle?

• An angle that measures 90°

• An angle that measures 180°

• An angle that measures 45°

• An angle that measures 360°

What is the sum of supplementary angles?

• 90°

• 180°

• 360°

• 45°

What are vertical angles?

• Two angles whose measures sum to 90°

• Opposite angles formed when two lines intersect

• An angle that measures 180°

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

What is an acute angle?

• An angle that measures more than 90° but less than 180°

• An angle that measures more than 0° but less than 90°

• An angle that measures 180°

• An angle that measures 90°

What is an angle?

• A geometric shape formed by two rays, lines, or line segments that meet at a common point

• An angle that measures 180°

• Two angles whose measures sum to 90°

• Opposite angles formed when two lines intersect

What is an obtuse angle?

• An angle that measures more than 90° but less than 180°

• An angle that measures more than 0° but less than 90°

• An angle that measures 180°

• An angle that measures 90°

What is a vertex?

• A point where two rays, lines, or line segments meet to form an angle

• A line that extends infinitely in both directions

• A flat surface that extends in all directions

• A point that divides a line segment into two equal parts

What does it mean to extend?

• To stop abruptly

• To continue in the same direction

• To form a closed shape

• To divide into two parts