Lines
Angles
Properties
Proofs
Miscelaneous
100

Two lines that are the same distance apart and will never touch:

Parallel lines

100

A 90 degree angle is called:

A right angle

100

Name the property: a=a, <A =<A

Reflexive property of equality

100

When writing a two column proof, you have ___________ and __________ at the top of each column.

Statements and reasons

100

What is a shape that has 6 sides?

Hexagon

200

Lines that intersect to form a right angle:

Perpendicular

200

An angle that is less than 90 degrees:

An acute angle

200

Name the Property: If a=b and b=c then a=c

Transitive property of equality

200

When writing properties, you should always make sure to do what?

Write out the property and add if it is of congruence or equality

200

What is a shape with 5 sides?

Pentagon

300

This has one endpoint and continues in one direction forever:

A ray

300

An angle that is greater than 90 degrees:

An obtuse angle

300

Name the property: If a=b then a+c= b+c

Addition property of equality

300

What is a theorem?

A statement that needs to be proven

300

A linear pair has one angle that is 135 degrees. What is the measure of the other angle?

45 degrees

400

Part of a line:

A line segment

400

Two angles added together is known as what postulate?

400

Name the property: If a=b, then a-c=b-c

Subtraction property of equality

400

How many steps can a proof have?

Anywhere from two to infinite steps, but typically fewer than ten.

400

A quadrilateral has 3 angles measuring 90 degrees, 100 degrees, and 70 degrees. What is the measure of the 4th angle?

100 degrees

500

When two segments are added together it is known as what postulate?

500

This tool is used to measure angles:

A protractor

500

Name the property: AB= 5 and AB + BC = AC, then 5 + BC = AC

Substitution property of equality

500

The reason that you always write for the first statement (and sometimes the second or third, etc.) is always ___.

"Given"

500

A boat has a sail with one pair of perpendicular lines, and two sides the same length. What kind of triangle is it?

A right isosceles triangle

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