Proving Congruent
Congruence (and isosceles triangles)
Parts of a triangle
Chapters 1-3
Chapters 7 and 8
100
In triangles ABC and DEF, AB = DE,
SAS
100
Triangle ABC = triangle DEF. Name the corresponding parts
AB = DE, BC = EF, CA = FD,
100
An equilateral triangle is also...
Equiangular
100
If m
Complementary
100
Reflect (-1,-3) over the x axis. Name the coordinates of the new point.
(-1,3)
200
In triangles ABC and DEF, AB = BC = DE = EF, and AC = DF.
SSS
200
Define Third Angles Theorem.
If two angles of one triangle are congruent to two angles of another triangle, then the third angles are also congruent.
200
Classify by angles and sides: In triangle ABC, m
Obtuse Isosceles Triangle
200
Two planes intersect in a _____. Two lines intersect in a _____.
Line, Point
200
Rotate (-2,5) 180 degrees about the origin. Name the coordinates of the new point.
(2,-5)
300
In triangles ABC and ADE,
ASA
300
Name the theorem: If two sides of a triangle are congruent, then the angles opposite them are congruent.
Base Angles Theorem
300
Name the Theorem: The sum of the interior angles of a triangle is 180 degrees.
Triangle Sum Theorem
300
Name the converse, inverse, and contrapositive of: If p, then q.
If q, then p. If not p, then not q. If not q, then not p.
300
Name two of the three postulates/theorems you can use to prove triangles similar.
AA, SAS, and SSS
400
In triangles ABC and DEF,
Hypotenuse-Leg (HL)
400
Triangle ABC = triangle DEF. What reason shows that
CPCTC (Corresponding Parts of Congruent Triangles are Congruent)
400
Exterior Angles Theorem: The measure of an exterior angle of a triangle is equal to the sum of the measures of the...
two nonadjacent interior angles.
400
Using the diagram, what are angles 4 and 6. (diagram on board)
Consecutive Interior Angles
400
Triangle ABC ~ Triangle DEF. AB = 18, DE = 6, and BC = 22. Solve for EF.
EF = 7 + 1/3
500
In triangles ABC and ABD,
No Solution
500
In an isosceles triangle, the two congruent sides are called the legs. What is the other side called?
The base.
500
In triangle ABC, A, B and C are... (Hint: The answer is not points)
Vertices (plural of vertex)
500
Write the equation of a line that goes through (2,5) and is perpendicular to: y= -1/2 x + 5
y = 2x + 1
500
Rotate (3,2) around the origin 90 degrees. Name the coordinates of the new point.
(2,-3)
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