The Theorem that states that if 2 sides of a triangle are congruent, then the angles opposite those sides are also congruent?
The Isosceles Triangle Theorem
Angles that are opposite and equal
Vertical Angles
The rule for reflecting over the line y = x.
(x,y) maps to (y, x)
What is the midpoint formula?
3 undefined terms?
points, lines, planes
The Pythagorean Theorem
ΔABC is an isosceles triangle. Line segment AB = Line segment AC. If angle B is 75 degrees, what is angle A?
30 degrees
The coordinate rule for translating a shape 3 units down and 2 units to the right
(x,y) maps to (x +2, y - 3)
What is the distance formula?
A rigid motion in which the orientation of the shape changes.
Reflection
Theorem which states that the sum of the measures of the angles of triangle = 180 degrees.
Angle Sum Theorem
Angles that are both adjacent and supplementary.
Linear Pairs
The coordinate rule for rotating a shape 270 degrees clockwise.
(x, y) maps to (-y, x)
(0.5, 1.5)
Angles that have a sum of 90 degrees
Complementary Angles
Theorem which states the measure of an exterior angle of a triangle is equal to the sum of the measures of the two remote interior angles.
Exterior Angle Theorem
The measure of angle PQR if PQ is perpendicular to SR.
90 degrees
The image of P (7, -3) after a rotation of 270 degrees about the origin.
(-3, -7)
Find distance of (-2,3) and (-7,7).
6.403...
The number of lines of symmetry of a parallelogram.
None
Any point on this line must be equidistant to the endpoints of the segment, according to this theorem?
The perpendicular bisector theorem
The measure of an interior angle of a nonagon.
140 degrees
Under a rotation of 270 degrees, Point P did not move because.......
Point P was on the center of Rotation
The endpoint of AB, if P (-3, -1) is the midpoint of AB, with A (7,4).
(-13, -6)
The order of rotational symmetry of a regular heptagon.
7