Geometry Flashcard, JT 8th Grade

Front

What is a characteristic of vertical angles?

Back

They have a common vertex and are congruent.

Front

What is a line that is equal to 180 degrees?

Back

Straight.

Front

What type of angle is less than 90 degrees?

Back

Acute.

Front

What lines lie in the same plane and intersect at right angles?

Back

Perpendicular Lines.

Front

What is a part of a line with one endpoint?

Back

Ray.

Front

What do you call angles that add up to 90 degrees?

Back

Complementary Angles.

Front

What do you call angles that add up to 180 degrees?

Back

Supplementary Angles.

Front

What is the term for a line that never intersects another line?

Back

Parallel Lines.

Front

What is the point where two lines intersect called?

Back

Vertex.

Front

What is a closed figure formed by three or more line segments?

Back

Polygon.