A triangle in which all angles have a measure less than 90°.
What is acute triangle.
100
Lines that are the same distance apart and will never cross. ⎮⎮
What are parallel lines.
100
The sides of a right triangle that are adjacent (next to) to the right angle.
What are legs.
100
A decimal that ends or terminates. These are also rational numbers.
What is Terminating Decimal
100
Angles that are in the same position and were made by lines cutting through two or more other lines.
What are Corresponding Angles
200
A triangle in which the measure of all the angles are equal and all sides are of equal length.
What is equilateral.
200
Lines forming a right angle. ⊥
What are perpendicular lines.
200
The side of a right triangle that is opposite the right angle. It is the longest side of this type of triangle.
What is Hypotenuse.
200
The set of all rational numbers and all irrational numbers; i.e. all numbers on a number line.
What are Real Numbers.
200
The angles inside the two lines when a pair of parallel lines is crossed by another line.
What are Alternate Interior Angles.
300
A triangle that has a right angle.
What is right triangle.
300
A pair of angles directly opposite each other, formed by the intersection of straight lines.
What are Vertical Angles.
300
A statement about the relationship among the lengths of the sides of a right triangle. Can also be written as a² + b² = c²
What is Pythagorean Theorem.
300
A number that cannot be written as a fraction with a numerator and a denominator that are integers. The decimal representation never ends or repeats.
What is Irrational Number.
300
Two angles whose sum is 90°.
What are Complementary Angles
400
Triangles having the same size and shape.
What is Congruent Triangles
400
Two angles whose sum is 180°.
What are Supplementary Angles.
400
Name for the symbol used to express the length of a side of a square in relation to area.
What is Radical or Square Root.
400
A number that can be written as a fraction with a numerator and denominator that are integers. The decimal representation either ends or repeats.
What is Rational Number
400
The angles outside the two lines when a pair of parallel lines is crossed by another line.
What are Alternate Exterior Angles.
500
An if-then statement where the hypothesis and the conclusion have switched places. For example, if all mammals produce mild to feed their young, the converse is that all animals that produce milk must be mammals.
What is Converse.
500
Angles immediately next to each other.
What are Adjacent Angles.
500
The ratios of the circumference of a circle to its diameter. The value is typically displayed as 3.14. (π)
What is pi.
500
A decimal with a patter of a fixed number of digits that repeats forever. These can also be described as rational numbers.
What is repeating decimal.
500
Sides that hold the same position in either congruent or similar shapes.