Key Geometry Vocabulary

An angle with a measure between 0 and 90 degrees is called an _____________________.

• acute angle
• right angle
• obtuse angle
• straight angle

Tags

CCSS.4.G.A.1

An angle with a measure equal to 90 degrees is called a __________________________.

• right angle
• obtuse angle
• acute angle
• congruent angle

Tags

CCSS.4.G.A.1

Points that are at the ends of a line segment are called _____________________________.

• endpoints
• arrows
• rays
• midpoints

Tags

CCSS.HSG.CO.A.1

A _______________ is a flat, 2-dimensional surface usually represented by a shape that looks like a floor or a wall.

• plane
• segment bisector
• line
• ray

Tags

CCSS.HSG.CO.A.1

An angle with a measure equal to 180 degrees is called a _____________________.

• straight angle
• line
• obtuse angle
• acute angle

Tags

CCSS.4.G.A.1

Coplanar lines that do not intersect.

• Parallel Lines
• Perpendicular Lines
• Congruent Segments
• Parallel Planes

Tags

CCSS.4.G.A.1

CCSS.HSG.CO.A.1

What are the arrows pointing to?

• Ray
• Endpoints
• Midpoint
• Vertex

Tags

CCSS.HSG.CO.A.1

lines that cross or meet and form angles

• parallel lines
• intersecting lines
• ray

Tags

CCSS.4.G.A.1

CCSS.HSG.CO.A.1

an angle that measures greater than 90* but less than 180*

• acute angle

• obtuse angle

• straight angle

• right angle

Tags

CCSS.4.G.A.1

• line
• line segment
• ray
• angle

Tags

CCSS.4.G.A.1