GEOMETRY 101

Front

What are parallel lines?

Back

Lines that never meet, no matter how far they are extended.

Front

What is a polygon with 8 sides and 8 angles called?

Back

Octagon.

Front

Which quadrilateral has 4 right angles and 4 sides of equal length?

Back

Square.

Front

What quadrilaterals have all sides of equal length?

Back

Rhombus and square.

Front

What is the measure of obtuse angles?

Back

More than 90° but less than 180°.

Front

What is a line segment?

Back

A part of a line that has two endpoints.

Front

What is the sum of the interior angles of a triangle?

Back

180°.

Front

What do you call a triangle with all sides of different lengths?

Back

Scalene triangle.

Front

What is a right angle?

Back

An angle that measures exactly 90°.

Front

What is a quadrilateral?

Back

A polygon with four sides.