Angle Vocabulary

Question 1

Parallel

Answer 1

Lines that will never cross and are the same distance apart and may go on forever ( lines will not cross if they go on and on.

Question 2

Arc

Answer 2

Part of a circle that represents an angle between two intersecting lines.

Question 3

Angles

Answer 3

When lines intersect they form angles and angles are the spaces or shapes that are formed between the intersecting lines- they meet at a vertex. Name angles by names of points.

Question 4

Perpendicular

Answer 4

Lines that form square corners when they intersect, they form right angles.

Question 5

Right angles

Answer 5

Lines that form it are perpendicular and the angles measure 90 degrees.

Question 6

Intersection

Answer 6

When lines cross they cross at a point called the intersection.

Question 7

Acute angles

Answer 7

Angles that are less than a right angle; less than 90 degrees.

Question 8

Obtuse angles

Answer 8

Angles greater than a right angle; greater than 90 degrees.

Question 9

Straight angle

Answer 9

A straight line- two rays pointing in the opposite directions and it equals 180 degrees.

Question 10

Complementary angles

Answer 10

Two angles that form a right angle are called complementary angles = 90 degrees.

Question 11

Supplementary angles

Answer 11

Two angles combine to form a straight angle = 180 degrees.

Question 12

Vertex

Answer 12

The point where two rays meet.

Question 13

Congruent

Answer 13

Having the same measurement.

Question 14

Protractor

Answer 14

A tool that measures angles.

Question 15

Degrees

Answer 15

A measurement used to measure angles.