Proving Geometry Intro

Name the angle with two arcs

• < FIE

• < EIR

• < FER

• < FIR

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

• acute angle

• right angle

• obtuse angle

• straight angle

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

• right angle

• obtuse angle

• acute angle

• congruent angle

Part of a line. Has two endpoints and includes all of the points in between.

• Point

• Angle

• Line

• Line Segment

Two lines intersect at a ....

• angle

• point

• line

• intersection

What are vertical angles?

• Angles that are adjacent to each other

• Angles that add up to 180°

• Angles that are opposite of each other when lines intersect

• Angles that add up to 90°

Name the angle with three arcs

• < FIE

• < IER

• < FIR

• < REF

Identify this picture. 

• ray AB

• line AB

• line segment AB

• point AB

• ray AB
• line AB
• segment AB
• bisector

If ∠5 ≌∠7, which of the following can be concluded?

• r is parallel to s by converse of Alternate Interior Angles Thm.

• u is parallel to v by Converse of Corresponding Angles Thm

• s is ⊥ u by Converse of Alternate Interior Angles Thm

• v ⊥ r by Converse of Alternate Exterior Angles Thm