Lines, Rays, Angles

Front

What do you call the point where two rays meet?

Back

Vertex

Front

What is an angle formed by two rays?

Back

Angle

Front

How many degrees are in a straight angle?

Back

180 degrees

Front

What type of angle measures less than 90 degrees?

Back

Acute angle

Front

What type of angle measures exactly 90 degrees?

Back

Right angle

Front

What type of angle measures more than 90 degrees but less than 180 degrees?

Back

Obtuse angle

Front

What is a line that has a starting point but no endpoint?

Back

Ray

Front

What is a line that extends infinitely in both directions?

Back

Line

Front

What do you call a four-sided figure?

Back

Quadrilateral

Front

Which shape is not a quadrilateral: Square, Parallelogram, Trapezoid, or Pentagon?

Back

Pentagon