Geometry Midterm Vocabulary

Front

A triangle with three congruent sides.

Back

Equilateral Triangle: A triangle where all three sides are of equal length.

Front

The point in the middle of a line segment.

Back

Midpoint: The point that divides a line segment into two equal parts.

Front

Two angles that add to equal 90 degrees.

Back

Complementary Angles: Angles whose measures add up to 90 degrees.

Front

Two non-coplanar lines that never intersect.

Back

Skew Lines: Lines that do not intersect and are not parallel.

Front

A triangle with no congruent sides.

Back

Scalene Triangle: A triangle where all three sides are of different lengths.

Front

A triangle with two congruent sides.

Back

Isosceles Triangle: A triangle with at least two sides of equal length.

Front

The longest side of a right triangle, opposite the right angle.

Back

Hypotenuse: The side opposite the right angle in a right triangle.

Front

A polygon with four sides.

Back

Quadrilateral: A four-sided polygon.

Front

A triangle with one angle greater than 90 degrees.

Back

Obtuse Triangle: A triangle that has one angle measuring more than 90 degrees.

Front

A triangle with one angle equal to 90 degrees.

Back

Right Triangle: A triangle that has one angle measuring exactly 90 degrees.