Triangles
Angles
Lines
Classifying
100
What is a triangle with all sides equal?
An equilateral triangle.
100
What is a right angle?
An angle that measures 90 degrees.
100
How can we tell if lines are perpendicular
Lines intersect at 90 degrees
100
What is the difference between acute and obtuse angles?
Acute are smaller than 90 degrees and obtuse are larger than 90 degrees.
200
What type of triangle has one angle greater than 90 degrees?
An obtuse triangle.
200
What does it mean for lines to be parallel?
Parallel lines never intersect and are always the same distance apart.
200
Give an example of parallel lines in real life.
Railroad tracks.
200
How do you classify a triangle with one right angle?
It is classified as a right triangle.
300
How can you identify a scalene triangle?
A scalene triangle has all sides of different lengths.
300
What type of angle is less than 90 degrees?
An acute angle.
300
What does it mean for two lines to intersect?
They cross each other at a point.
300
What is a quadrilateral with opposite sides parallel called?
A parallelogram.
400
Name a triangle with two sides equal.
An isosceles triangle.
400
What is a straight angle?
An angle that measures 180 degrees
400
Name an example of perpendicular lines.
The lines of a plus sign (+).
400
What type of triangle is this? 
A right triangle
500
What is the sum of the angles in a triangle?
180 degrees
500
Define complimentary angles
Angles that add up to be 90 degrees
500
How do you identify a transversal line?
A line that crosses two or more other lines.
500
What type of angle measures 60 degrees?
An acute angle