Lines and Angles
Lines that intersect to form a 90-degree angle are called what?
Perpendicular lines
A triangle with two sides of equal length is called what?
Isosceles triangle
What is the formula for the area of a rectangle?
Length times width
When parallel lines are cut by a transversal, which type of angles are always equal?
corresponding angles, alternate interior angles, alternate exterior angles
What type of transformation changes the size of a shape, but not its shape?
Dilation
An angle that measures less than 90 degrees is called what type of angle?
Acute angle
A shape with five sides is called what?
pentagon
What is the formula for the area of a square
s2
What is the relationship between consecutive interior angles (angles on the same side of the transversal) when two lines are parallel?
they are supplementary- add up to 180 degrees
What is the rule for rotating a point 90 degrees counterclockwise around the origin?
(x,y) to (-y,x)
What is the sum of the angles in a triangle?
180 degrees
What is the name of a quadrilateral with four equal sides and four right angles?
square
What is the formula for the circumference of a circle?
2times pi times radius
If two lines are cut by a transversal and the alternate interior angles are congruent, what can you conclude about the two lines?
the two lines are parallel
What is the name of a transformation that preserves both size and shape?
Rigid Transformation
What is the name of a line that intersects two or more other lines at different points?
transversal line
What is the name of a triangle with all sides of equal length?
Equilateral Triangle
What is the formula for the area of a circle?
pi times radius squared
What is the name of the type of angles that are opposite each other at the intersection of two lines? They are always equal
Vertical angles
What type of transformation changes the size of the object?
Non Rigid Transformation
Lines that are always the same distance apart and never intersect are called what?
parallel lines
What is the name of a quadrilateral with two pairs of parallel sides?
parallelogram
What is the formula of the volume of a rectangular solid
L x W x H
What is the name of a line that intersects two or more other lines, especially at distinct points?
Transversal line
If a point (3, 2) is rotated 180 degrees about the origin , what are the coordinates of the image?
(-3, -2)