Geometry Vocabulary

In geometry, what is a "vertex"?

• The center of a circle

• A point where two or more lines meet

• The longest side of a triangle

• The space inside a shape

What does "congruent" mean when referring to geometric shapes?

• Having the same shape but different sizes

• Having the same size and shape

• Having the same area but different shapes

• Having the same perimeter but different shapes

What is a "transversal" in relation to parallel lines?

• A line that is parallel to both lines

• A line that is perpendicular to both lines

• A line that intersects two parallel lines

• A line that bisects both parallel lines

What does "perpendicular" mean when describing the relationship between two lines?

• The lines are parallel

• The lines intersect at a 90° angle

• The lines never intersect

• The lines form a 45° angle

Match the vocabulary with the correct meaning

• Vertical Angles

• Two angles with the sum of 180°.

• Adjacent angles

• Angles that are side by side, sharing a ray and a vertex

• Supplementary Angles

• Geometry term meaning equal

• Congruent

• Two angles directly across that are congruent, sharing only a vertex

Answer explanation

Think about it. Angle pairs are plural - more than one angle.

"An angle" is just one angle

Define Acute

• Less than 90

• Exactly 90

• Greater than 90 and less than 180

• Exactly 180

What is the definition of a midpoint?

• The number of square units required to cover a surface

• A point that divides a segment into two congruent segments

• A point where lines intersect

• The length of a path between two points

What is the definition of Congruent?

• Having the equal size, shape, and measure

• An angle measuring less than 90˚

• A common feature or characteristic

• Having two dimensions – length and width

What is the difference between a radius and a diameter of a circle?

• The radius is twice the diameter

• The diameter is twice the radius

• They are the same length

• The radius goes around the circle, the diameter goes through it

What is the name of a polygon with exactly eight sides?

• Hexagon

• Heptagon

• Octagon

• Nonagon