Exploring 4th Grade Geometry Vocabulary

What does the prefix 'Geo' in geometry mean?

• Point

• Space

• Earth

• Measure

What is a point in geometry?

• A location in space

• An angle

• A line segment

• A ray

What is the difference between a line and a line segment?

• A line segment has no points

• A line is thicker than a line segment

• A line extends forever, a line segment does not

• A line segment extends forever, a line does not

What tool is used to measure angles?

• Protractor

• Compass

• Ruler

• Calculator

What is an acute angle?

• An angle more than 90 degrees

• An angle less than 90 degrees

• An angle exactly 180 degrees

• An angle exactly 90 degrees

What is the sum of the angles in a straight line?

• 270 degrees

• 360 degrees

• 180 degrees

• 90 degrees

What kind of lines form a 90-degree angle?

• Skew lines

• Parallel lines

• Perpendicular lines

• Intersecting lines

What are parallel lines?

• Lines that intersect

• Lines that never cross

• Lines that form a 90-degree angle

• Lines that are curved

What is an equilateral triangle?

• A triangle with no equal sides

• A triangle with two sides equal

• A triangle with one right angle

• A triangle with all sides equal

What type of triangle has no equal sides?

• Right

• Scalene

• Isosceles

• Equilateral