This kind of angle measures less than 90 degrees.
An acute angle
These kinds of lines intersect and form 90 degree angles.
Perpendicular lines.
You get this kind of number when you add a whole number and a fraction to each other.
A mixed number.
An angle that turns through 1/360 of a circle has this measurement.
One degree.
Of the two numbers in a fraction, this one tells you the number of equal parts in the whole.
The denominator.
When dividing something into equal groups you would give this name to the amount left over.
The remainder
These pairs of lines on a plane will never intersect.
Parallel lines
A triangle with at least two equivalent sides has this name.
An isosceles triangle
When a polygon has four congruent edges and four congruent vertices it is given this name.
A square.
Of all the different kinds of angles this one measures exactly 90 degrees.
A right angle.
You would give this name to an angle with a measure greater than 90 degrees but less than 180 degrees.
An obtuse angle.
When lines have at least one point in common they are these kinds of lines.
Intersecting lines.
This tool is used to measure and draw angles.
A protractor.
Of the two numbers in a fraction, this one tells you the how many parts of the whole are selected.
The numerator.
A triangle that contains one 90-degree angle is this kind of triangle.
A right triangle.
Of all the different kinds of angles this one measures exactly 180 degrees.
A straight angle.
