T

Tangent of an angle   If LA is an acute angle of a right triangle, the tangent of LA tan A is the ratio of the length of the side opposite LA to the length of the side adjacent to LA.

Tenths The place value of the first numeral to the right of the decimal point in a decimal numeral

Terminating decimal A decimal numeral in which a zero digit repeats forever

Terms of a proportion The numbers in a proportion.

Terms of an expression   The parts of a mathematical expression that are separated by a + sign.

the perpendicular distance from the base to the opposite vertex.

Transform an equation or inequality  ,  To rewrite an equation or inequality as an equivalent equation or inequality.

Translated sentence A mathematical problem written in English changed to a problem containing mathematical

symbols for the words

Transversal  A line that intersects two other lines.

Trapezoid  A quadrilateral with exactly one pair of parallel sides.

Triangle  A polygon with three sides.

Trigonometric ratios   Any of the sine, cosine, and tangent ratios.

Twin primes Two prime numbers that differ by 2