Terms
What is the term for two adjacent angles which add up to 180o
Supplementary (or Straight) Angle
How many sides do triangles have?
3 sides
Rectangles have three sets of parallel lines. (TRUE or FALSE)
FALSE
The point where rays (or lines) meet in an angle is called a ____?
Vertex
What is it called when something is the same on each side when folded
Symmetry
In degrees, what is the measure of all right angles?
90o
Some triangles have right angles. (TRUE or FALSE)
TRUE
What does the latin root "quad" mean?
4
What figure has one end point, and continues infinitely in one direction; also found on angles.
Rays
Polygons are shapes that only have straights lines. (TRUE or FALSE)
TRUE
What is the term for angles with a measure less than 90o?
Acute
What type of triangle has 2 equal sides and a little box in one corner
Right Isosceles
What do you call a quadrilateral that has 2 pairs of sides that never touch
Parallelogram
What do you call a dot that stands alone in geometry?
Point
Triangles are considered quadrilaterals. (TRUE or FALSE)
FALSE
The angle that measures greater than 90o and less than 180o
Obtuse
What type of triangle has all angles under 90 degrees and no equal sides
acute scalene
Which two quadrilaterals have 4 equal sides?
Square and rhombus
Two lines that will never meet is called _______ lines.
Parallel
A circle is a polygon. (TRUE or FALSE)
FALSE
What symbol is used to show/indicate a right angle?
a small square
Name all 6 types of triangles
Right triangle, Acute triangle, Obtuse triangle, Equilateral triangle, Scalene triangle, and Isosceles triangle
Which quadrilateral has only 1 set of parallel lines?
Trapezoid
A [line] that has two end points is called a _______.
Line Segment
How many degrees are in a reflex angle
more than 180 degrees