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Unit 4 Math
Circles, lines, and angles
Question | Answer |
---|---|
A part of a line that has one end point and extends without end in one direction. | Ray |
A figure formed by two rays or line segments with a common endpoint. | Angle |
A straight path that goes on forever in opposite directions. | Line |
Lines, line segments, or rays are this if they form right angles. | Perpendicular |
The same distance apart at every point. | Parallel |
Lines that are not parallel or perpendicular. | Oblique |
To cut or divide by passing through or across. | Intersect |
A tool used to measure angles. | Protractor |
A unit for measuring angles or temperature. | Degree |
An angle that measures 90 degrees. | Right Angle |
An angle that is 180 degrees. | Straight Angle |
Angles having a sum of 180 degrees. | Supplementary Angles |
Angles having the some of 90 degrees. | Complementary Angles |
When two angles intersect they form these angles. | Opposite Angle |
These are pairs of opposite angles formed by intersecting lines. | Vertical Angle |
A closed plane figure with sides made of straight line segments. | Polygon |
Exactly the same size and shape. | Congruent |
A triangle with at least two congruent sides. | Isosceles Triangle |
Having all equal sides. | Equilateral Triangle |
A triangle with no equal sides. | Scalene Triangle |
A triangle with three acute angles. | Acute Triangle |
A triangle with one obtuse angle. | Obtuse triangle |
A triangle with one right angle. | Right Triangle |
A trapezoid with one right angle. | Right Trapezoid |
A plane figure that forms a closed path so that all the points on the path are the same distance from a point called the center. | Circle |
An angle greater than 180 degrees. | Reflex Angle |