Topic 15
Lines
Lines
What is a line with two endpoints called?
Line segment
How many degrees are inside the little box (square)?
90 degrees
Lines that NEVER touch or intersect are called _____ .
Parallel lines
What is the name of a triangle that has two sides of the same length?
Isosceles triangle
A square has ________ lines of symmetry?
4
It has one endpoint and goes on and on in the other direction. What am I?
Ray
What is a 90° angle called?
Right angle
Lines that intersect and form square corners or 90 degree angles are called _________ .
Perpendicular lines
What quadrilateral has all equal sides, but no right angles?
Rhombus
A rectangle has _____ lines of symmetry.
2
What angle forms a 180°?
Straight angle
What is an angle less than 90 degrees called?
Acute angle
Lines that cross but does form a right angle is called ______ .
Intersecting lines
Name three different triangles.
Right triangle, Scalene Triangle, Isosceles Triangle
A trapezoid has _______ lines of symmetry.
1
What is an acute angle?
An angle that is less than 90°
How many degrees are in a triangle?
180°
What geometric term could you use to describe the top and bottom edges of the Promethean board?
Parallel lines
Name five different quadrilaterals.
Square, Rectangle, Rhombus, Trapezoid, Parallelogram
A hexagon has _______ lines of symmetry?
6
What is an obtuse angle?
An angle that is greater than 90° and less than 180°
How many degrees are in a quadrilateral?
360°
The blades of an open scissors look like what pair of lines?
Intersecting lines
What quadrilateral can also be called a parallelogram, rectangle, and rhombus?
Square
A triangle with all equal sides has _____ lines of symmetry?
3