High School Geometry Vocabulary

A polygon with 3 sides is

• a quadrilateral.

• a pentagon.

• an angle.

• a triangle.

Which best describes an isosceles triangle?

• A polygon with 3 sides.

• A triangle having 2 sides of the same length.

• A triangle having all sides of different lengths.

• A triangle having all sides the same lengths.

Which best describes a scalene triangle?

• A polygon with 3 sides.

• A triangle having all sides the same length.

• A triangle having 2 sides of the same length.

• A triangle having all sides of different lengths.

What angle is formed on the inside of two straight lines that intersect?

• An interior

• An exterior

• A triangle

• A shape

The angle formed by two perpendicular lines is

• an obtuse angle

• an acute angle

• a right angle

• a triangle

Attributes are

• being an equal distance apart without ever touching

• information that determines the properties of something

• any four-sided figure

• when one shape becomes exactly like another after a flip, slide, or turn (mirror image)

A ​ ​ (a)   triangle is shown.

• right

• obtuse

• acute

What type of lines are shown?

• parallel lines

• right angles

• intersecting lines

• perpendicular lines

How many sides does a polygon have?

• at least 3

• 2

• 0

• none of these choices

How would you describe a quadrilateral?

• 4 sided figure

• 5 sided figure

• 3 sided figure

• 6 sided figure