Topic 15
Lines
Lines
What is a line with two endpoints called?
Line segment
What angle measures 180°? (acute, obtuse, right, straight)
Straight Angle
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 90° angle called? (acute, obtuse, right)
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 a 75° angle called? (acute, obtuse, right)
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°
What do you call a triangle with 3 60 degree angles?
(acute, obtuse, scalene, equilateral, isosceles)
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°
What is a 135 degree angle called? (acute, obtuse, right)
obtuse angle
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