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Isabel Rivera Galicia
A point can be
described as a location
in space. Represented
by a dot and is named
by writing a capital letter
next to the...
LINE
A line is a straight row
of points that goes on
forever in both
directions. A line is
named by a minuscule
letter
r
s
TYPES OF LINES
•Broken Line: we combine various segments in zigzag
•Wavy Line: we combine semicircular arcs together
•Mixe...
A line segment is a piece of a line
that has two endpoints.
It is named for its endpoints. The
segment with endpoints A an...
Lines that are on the
same plane, but that
never intersect
(cross).
PARALLEL LINES
s
r
Lines that intersect
(cross)
INTERSECTING LINES
An angle is made up of
two lines that start at a
common endpoint. The
common endpoint is
called the vertex.
Named:
ANGLE
Angles can be
measured in degrees.
The symbol for degrees
is a small raised circle °
Acute angles – measure less than 90°
Right angles – measure exactly 90°
Obtuse angles measure more than 90°
but less than ...
An angle of 90° is called a
right angle. To show that an
angle is a right angle, we
draw a small square at the
vertex.
RIG...
Acute angles measure less
than 90°
ACUTE ANGLE
An obtuse angle measures
more than 90° but less than
180°
OBTUSE ANGLE
Two lines are called
perpendicular lines if
they intersect to form
a right angle.
PERPENDICULAR LINES
Two angles are called
complementary angles if the
sum of their measures is
90°. If two angles are
complementary , each
ang...
Two angles are called
supplementary angles if the sum
of their measures is 180°
SUPPLEMENTARY ANGLES
If two figures are
identical in both
shape and size
then they are
congruent
CONGRUENT FIGURES
If two figures have
the same shape
but different sizes
then they are
similar
SIMILAR FIGURES
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Geometry Vocabulary

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Geometry Vocabulary

  1. 1. Isabel Rivera Galicia
  2. 2. A point can be described as a location in space. Represented by a dot and is named by writing a capital letter next to the dot. POINT
  3. 3. LINE A line is a straight row of points that goes on forever in both directions. A line is named by a minuscule letter r s
  4. 4. TYPES OF LINES •Broken Line: we combine various segments in zigzag •Wavy Line: we combine semicircular arcs together •Mixed Line: we combine straight and curve lines
  5. 5. A line segment is a piece of a line that has two endpoints. It is named for its endpoints. The segment with endpoints A and B shown to the right is named: SEGMENT
  6. 6. Lines that are on the same plane, but that never intersect (cross). PARALLEL LINES s r
  7. 7. Lines that intersect (cross) INTERSECTING LINES
  8. 8. An angle is made up of two lines that start at a common endpoint. The common endpoint is called the vertex. Named: ANGLE
  9. 9. Angles can be measured in degrees. The symbol for degrees is a small raised circle °
  10. 10. Acute angles – measure less than 90° Right angles – measure exactly 90° Obtuse angles measure more than 90° but less than 180° Straight angles measure exactly 180° CLASSIFYING ANGLES
  11. 11. An angle of 90° is called a right angle. To show that an angle is a right angle, we draw a small square at the vertex. RIGHT ANGLE
  12. 12. Acute angles measure less than 90° ACUTE ANGLE
  13. 13. An obtuse angle measures more than 90° but less than 180° OBTUSE ANGLE
  14. 14. Two lines are called perpendicular lines if they intersect to form a right angle. PERPENDICULAR LINES
  15. 15. Two angles are called complementary angles if the sum of their measures is 90°. If two angles are complementary , each angle is the complement of the other. COMPLEMENTARY ANGLES
  16. 16. Two angles are called supplementary angles if the sum of their measures is 180° SUPPLEMENTARY ANGLES
  17. 17. If two figures are identical in both shape and size then they are congruent CONGRUENT FIGURES
  18. 18. If two figures have the same shape but different sizes then they are similar SIMILAR FIGURES

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