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Transcript
VOCABULARY 8 ANGLE AND TRIANGLE RELATIONSHIPS USING REAL NUMBERS Square- Square Root- Multiply a number by itself a value that, when multiplied by itself, gives the number Radical Symbol Examples: 4 2 6.25 2.5 13 13 Perfect Square Right Triangle A number made by squaring a whole number A triangle that has a right angle (90°) Hypotenuse and Legs Pythagorean Theorem Hypotenuse: longest side; c Legs; a and b 𝑎2 + 𝑏 2 = 𝑐 2 Angle Degree The amount of turn between two straight lines that have a common end point (the vertex) A measure for angles. There are 360 degrees in a full rotation. Vertex The symbol for degrees is °. Adjacent Angles A point where two or more straight lines meet. A corner. Two angles are Adjacent when they have a common side and a common vertex (corner point), and don't overlap. Complementary Angles Supplementary Angles Two Angles are Complementary when they add up to 90 degrees Two angles are Supplementary when they add up to 180 degrees. They do not have to be next to each other to be complementary. They do not have to be next to each other to be supplementary. Alternate Interior Angles Alternate Exterior Angles The pairs of angles on opposite sides of The pairs of angles on opposite sides of the transversal but inside the two the transversal but outside the two lines. lines. Corresponding Angles The angles in matching corners. The angles create an X. Congruent Angles Vertical Angles Vertical Angles are the angles opposite each other when two lines cross. They are always equal. Angles are equal to each other. Parallel Lines Transversal Two lines on a plane that never meet. They are always the same distance apart. A line that crosses at least two other lines. Intersecting Lines Where lines cross over (have some common point).