Vocabulary & Definitions
Which of the following is not a polygon?
a. Triangle
b. Circle
c. Rectangle
d. Square
What is b. circle.
A point in the middle is called the...
What is a MIDPOINT?
A rigid motion that flips.
What is a REFLECTION?
A triangle that has all equal sides and all equal angles.
What is an EQUILATERAL TRIANGLE?
A special kind of example that disproves a statement.
What is a COUNTEREXAMPLE?
A part of a line with a start point but no end point, it goes to infinity (shown by using an arrow).
What is a ray?
Find the area of a triangle with a base of 10mm and a height of 4mm.
What is 20mm2?
All of the transformations are isometries (same size after transformation) EXCEPT.
Rotation
Dilation
Reflection
Translation/Glide
What DILATION?
When a segment/side is congruent to itself.
What is REFLEXIVE PROPERTY?
If a line is vertical, then the slope of the line is undefined.
"the slope of the line is undefined" represents...
What is the CONCLUSION?
Congruent figures have the following...
a. Corresponding side lengths that are equal
b. Same shape
c. Corresponding angles that are equal
d. All of the above
What is d. All of the above.
Picture this: A, B, and C are collinear (on the same line). And B is somewhere between A and C.
Find the length of AC if AB=12 and BC=8.
What is 20?
Given triangle XYZ, what is the rule to describe the translation if X(-2, 3) is translated to X’(1, -2)?
a. (x,y) ⟶(x+1, y–1)
b. (x,y) ⟶(x–1, y+1)
c. (x,y) ⟶(x+3, y–5)
d. (x,y) ⟶(x–3, y+5)
What is c. (x,y) ⟶(x+3, y–5)?
Which congruence statement does not prove that two triangles are congruent?
a. SSS
b. SSA
c. SAS
d. ASA
What is b. SSA?
State the rule to the pattern
2187, 729, 243, 81, 27, 9, 3, ...
What is dividing by 3?
Draw triangle ABC.
∠___ is the included angle between CA and CB?
What is angle C?
E is the midpoint between D and F.
If DE=3x+2, EF=5x, find the value of x.
What is 1?
In ∆XYZ the vertices have coordinates of X (0,2), Y (2, 1), and Z (-1, -1). What is the dilation (multiplication) rule used if the image’s coordinates are X’ (0, 6), Y’ (6, 3), and Z’ (-3, -3)?
What is enlarge by a scale factor of 3?
When two angles and a non-included side of one triangle are congruent to the corresponding two angles non-included side of another triangle, then the two triangles are congruent by ___.
What is AAS
Find next number in the sequence 3,7,15,31,63, ___.
What is 127?
A statement created by switching the hypothesis & conclusion.
What is a CONVERSE statement?
A line segment that divides another segment into two congruent parts and forms a 90° angle with the segment.
What is a PERPENDICULAR BISECTOR?
Take Point A (-5, 2) reflect it over the x-axis then a translation of (x+6, y+2). Where is Point A'?
What is (1, 0)?
In isosceles triangle △XYZ, XY=YZ.
Which statement must be true?
a. m∠X=m∠Z
b. m∠X=m∠Y
c. m∠Z=m∠Y
What is a. m∠X=m∠Z?
A: “If it is raining, then the grass is wet.”
B: “If the grass is NOT wet, then it is NOT raining.”
What is a CONTRAPOSITIVE statement?