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100
Parallel lines
What are lines that don't cross?
100
One angle that measures 90 degrees
What is a right triangle?
100
A shape with four equal sides and four right angles
What is a square?
100
Hexagon
What is a polygon with six sides called?
100
An angle less than 90 degrees
What is an acute angle?
200
Intersecting lines
What are lines that cross over each other?
200
All three angles are less than 90 degrees
What is an acute triangle?
200
A quadrilateral whose angles are all right angles
What is a rectangle?
200
A polygon with eight sides
What is an octagon?
200
An angle that measures 90 degrees
What is a right angle?
300
Perpendicular lines
What are lines that form right angles at the point where they cross?
300
All three angles are greater than 90 degrees
What is an obtuse angle?
300
A parallelogram with four congruent sides
What is a rhombus?
300
Pentagon
What is a polygon with 5 sides?
300
An instrument used to measure angles
What is a protractor?
400
A straight path that goes on forever in two directions
What is a line?
400
None of the sides of a triangle are equal
What is a scalene triangle?
400
A quadrilateral with one pair of parallel sides
What is a trapezoid?
400
A nonagon
What is a polygon with 9 sides?
400
A shape that can be divided in half and look the exact same on both halves
What is symmetrical?
500
Two rays that meet at the same point
What is a vertex?
500
A triangle with two equal sides
What is an isosceles triangle?
500
The total number of degrees of all four angles in a quadrilateral
What is 360 degrees?
500
A parallelogram with opposite equal acute and obtuse angles and four equal sides
What is a rhombus?
500
A right angle equals 90 degrees. If I were to cut the angle in half and one angle measure is 45 degrees what is the measure of the other angle?
What is 45 degrees?