Points/Lines/Rays/Angles Flashcard

Front

What is a point in geometry?

Back

A point is a specific location in space that has no dimensions, represented by a dot.

Front

Define a line in geometric terms.

Back

A line is a straight one-dimensional figure that extends infinitely in both directions, having no endpoints.

Front

What is a ray in geometry?

Back

A ray is a part of a line that has a fixed starting point and extends infinitely in one direction.

Front

What are angles and how are they formed?

Back

Angles are formed by two rays that share a common endpoint, known as the vertex.

Front

What is the difference between acute, obtuse, and right angles?

Back

An acute angle is less than 90 degrees, a right angle is exactly 90 degrees, and an obtuse angle is greater than 90 degrees but less than 180 degrees.

Front

What is a line segment?

Back

A line segment is a part of a line that is bounded by two distinct endpoints.

Front

How do you measure an angle?

Back

An angle is measured in degrees using a protractor.

Front

What is the sum of the angles in a triangle?

Back

The sum of the angles in a triangle is always 180 degrees.

Front

What is a complementary angle?

Back

Complementary angles are two angles whose measures add up to 90 degrees.

Front

What is a supplementary angle?

Back

Supplementary angles are two angles whose measures add up to 180 degrees.