Angles & Triangles
Vocab
Contrapositive, Converse, Inverse, and Conditional Statements
100
180 degrees
What do the angles of a triangle add up to be?
100
The reflexive property is when you have an expression, you can flip it and it still equals itself. a+b=b+a
Define reflexive property
100
Any If..., Then... statement. (might want to remember your statement)
Give an example of a conditional statement
200
Complementary angles are two or more angles that equal 90 degrees. Supplementary angles are two or more angles that equal 180 degrees.
What are complementary and supplementary angles?
200
An acute angle is any angle that is less than 90 degrees.
Define what an acute angle is.
200
It switches the If and Then parts.
What does a converse statement do to the conditional statement?
300
An obtuse triangle.
If an angle in a triangle is larger than 90 degrees, what type of triangle is it?
300
Adjacent angles are two angles that share a ray and vertex.
Define adjacent angles.
300
It negates the conditional statement.
What does an inverse statement do to the conditional statement?
400
AAS, ASA, SSS, and SAS. AAS-angle, angle, side. ASA-angle, side, angle. SSS- side, side, side. SAS- side, angle, side.
What are the acronyms postulates for congruent triangles and what do they stand for?
400
You take a shape on a graph, and move it in any direction without changing the dimensions.
Define translation.
400
It switches the If and Then, and negates it.
What does the contrapositive statement do the the conditional statement?
500
You have to find the point of the line that is opposite to the angle where the line from the angle to the side makes a right angle.
If you're trying to find the orthocenter of a triangle, what are the steps?
500
Vertical angles are any two angles that are directly across from each ot.her. They are congruent
Define vertical angles.
500
Switched the If and Then statements and negated them.
Give the contrapositive to your conditional statement.
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