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Section 1

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Acute triangle

Front

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Geometry Math

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6 years ago

Date created

Mar 1, 2020

Cards (42)

Section 1

(42 cards)

Acute triangle

Front

A triangle that contains only angles that are less than 90 degrees.

Back

Parallelogram

Front

A quadrilateral with two pair of parallel sides

Back

irregular polygon

Front

A polygon that does not have all sides equal and all angles equal.

Back

Chord

Front

a straight line segment whose endpoints both lie on the circle.

Back

regular polygon

Front

A polygon is regular when all angles are equal and all sides are equal (otherwise it is "irregular").

Back

Midpoint

Front

A point that divides a segment into two congruent segments

Back

Supplementary angles

Front

Two angles whose sum is 180 degrees

Back

Scalene triangle

Front

a triangle with no congruent sides

Back

hypothesis

Front

A testable prediction, often implied by a theory An educated guess

Back

kite

Front

A quadrilateral that has two pairs of sides that are equal in length but not all 4 are equal.

Back

Tangent

Front

is a line that touches the circle at exactly one point, never entering the circle's interior.

Back

Pythagorean Theorem

Front

In a right angled triangle: the square of the hypotenuse is equal to. the sum of the squares of the other two sides.

Back

perpendicular lines

Front

Lines that intersect to form right angles

Back

Isosceles triangle

Front

a triangle with at least two congruent sides

Back

conclusion

Front

A summary based on evidence or facts

Back

Angle bisector

Front

a ray that divides an angle into two congruent angles

Back

trapezoid

Front

A quadrilateral that has a pair of opposite sides parallel.

Back

Right triangle

Front

a triangle with one right angle

Back

altitude of a triangle

Front

the perpendicular segment from a vertex to the opposite side or to the line that contains the opposite side

Back

Line

Front

1. A long thin mark on a surface. 2. A continuous extent of length, straight or curved, without breadth or thickness; the trace of a moving point. 3. Long, narrow mark or band.

Back

Quadrilateral

Front

A flat shape with four straight sides. (closed)

Back

parallel lines

Front

lines in the same plane that never intersect

Back

alternate interior angles

Front

angles between 2 lines and on opposite sides of a transversal

Back

rectangle

Front

A quadrilateral where all angles are right angles (90°). Also opposite sides are parallel and of equal length.

Back

rhombus

Front

A quadrilateral where all sides have equal length. It is a type of parallelogram.

Back

Collinear

Front

Points that lie on the same line

Back

Vertical Angles

Front

A pair of opposite congruent angles formed by intersecting lines

Back

alternate exterior angles

Front

Angles that lie outside a pair of lines and on opposite sides of a transversal.

Back

Segment bisector

Front

a segment, ray, line, or plane that intersects a segment at its midpoint

Back

distance

Front

How far it is from one point to another

Back

Linear Pair

Front

A pair of adjacent angles whose noncommon sides are opposite rays.

Back

Line segment

Front

A part of a line with two endpoints

Back

conditional statements

Front

A statement that can be written in if-then form.

Back

Equilateral triangle

Front

A triangle with three congruent sides

Back

transversal

Front

a line that intersects two or more coplanar lines at different points

Back

corresponding angles

Front

Angles formed by a transversal cutting through 2 or more lines that are in the same relative position.

Back

adjacent angles

Front

Two angles that share a common side and have the same vertex

Back

square

Front

A quadrilateral where all sides have equal length, and every interior angle is a right angle (90 degrees). Special rectangle.

Back

perpendicular bisector of a triangle

Front

A line that is perpendicular to a segment at its midpoint.

Back

Regular triangle

Front

All congruent sides and angles

Back

Obtuse triangle

Front

A triangle with one angle that is greater than 90 degrees.

Back

complementary angles

Front

Two angles whose measures add to 90 degrees.

Back