Geometric Figures Review
Chapter 19Harcourt Math
Point
An exact position or location
Line
It continues in both directions and doesn’t end (arrows)
Line Segment
It is a part of a line and has 2 endpoints
Ray
A part of a line, with one endpoint, that is straight and continues in
one direction.
Angle
A figure formed by 2 rays or line segments that share an endpoint.
Right Angle
A special “L” shaped angle that forms a square corner; a right angle
measures 90°.
Acute Angle
An angle that has a measure less than a right angle.
Obtuse Angle
An angle that has a measure greater than a right angle
Intersecting Lines
Lines that cross
Parallel Lines
Lines that never cross; lines that are always the same distance apart.
Perpendicular Lines
Lines that intersect to form right angles
Polygon
A closed plane figure with straight sides that are line segments.
Equilateral Triangle
A triangle that has 3 equal sidesand 3 equal angles
Isosceles Triangle
A triangle that has two equal sides
Right Triangle
A triangle with one right angle
Quadrilateral
A four-sided polygon.
Parallelogram
A four-sided polygon with two pairs of parallel sides.
Rhombus
A quadrilateral with 2 pairs of parallel sides and 4 equal sides
Rectangle
A quadrilateral with 2 pairs of parallel sides, 2 pairs of equal sides,
and 4 right angles
Trapezoid
A four-sided polygon having exactly one pair of parallel sides.
Pentagon
A polygon with 5 sides and 5 angles
Hexagon
A polygon with 6 sides and 6 angles
Octagon
A polygon with 8 sides and 8 angles
Which term best describes the following figure?
An exact position or location
(a) point (b) ray (c) angle (d) line
Which term best describes the following figure?
(a) rectangle (b) rhombus (c) parallelogram (d) polygon
Which term best describes the following figure?
(a) acute angle (b) right angle (c) obtuse angle (d) parallel lines
Which term best describes the following figure?
(a) point (b) line (c) line segment (d) ray
Which term best describes the following figures?
(a) acute angles (b) right angles (c) obtuse angles (d) intersecting lines
Which term best describes the following figure?
A figure made of two rays that share the same endpoint.
(a) angle (b) line (c) square (d) polygon
Which term best describes the following figure?
Lines that never cross, they are always the same distance apart.
(a) intersecting lines (b) parallel lines (c) perpendicular lines (d) angles
Which term best describes the following figure?
Lines that intersect to form right angles.
(a) intersecting lines (b) parallel lines (c) perpendicular lines (d) angles
Which term best describes the following figure?
(a) quadrilateral (b) pentagon (c) hexagon (d) octagon
Which term best describes the following figure?
(a) quadrilateral (b) pentagon (c) hexagon (d) octagon
Which term best describes the following figure?
(a) parallelogram (b) polygon (c) rhombus (d) trapezoid
Which term best describes the following figures?
(a) pentagons (b) polygons (c) rhombuses (d) octagons
Which term best describes the following figures?
(a) equilateral triangles (b) right triangles (c) isosceles triangles (d) quadrilaterals