VISUAL ARTS 3rd ESO
Lessons and Activities
GEOMETRY
Elementary Geometric Drawings
Angles
Angle Bisector
Perpendicular Bisector
Geometry
1
VISUAL ARTS 3rd ESO
Lessons and Activities
POLYGONS
are
PLANE SHAPES (figures)
with at least
3 STRAIGHT sides and 3 angles
Geometry
2
VISUAL ARTS 3rd ESO
Lessons and Activities
THEY CAN BE
REGULAR POLYGONS
Geometry
3
VISUAL ARTS 3rd ESO
Lessons and Activities
EQUILATERAL TRIANGLE
You can draw it knowing its side
Geometry
4
VISUAL ARTS 3rd ESO
Lessons and Activities
You can draw it knowing its
CIRCUMSCRIBED CIRCLE
How to GET the INSCRIBED CIRCLE
Geometry
5
VISUAL ARTS 3rd ESO
Lessons and Activities
How to GET the CIRCUMSCRIBED CIRCLE
In an EQUILATERAL triangle both CIRCLES
have the same CENTER
Because PERPENDICULAR bisectors and
ANGLE bisectors are the same LINES
Geometry
6
VISUAL ARTS 3rd ESO
Lessons and Activities
SQUARE
You can draw it knowing its side
Geometry
7
VISUAL ARTS 3rd ESO
Lessons and Activities
You can draw it knowing its
CIRCUMSCRIBED CIRCLE
You ONLY have to DRAW a DIAMETER
and then
DRAW the PERPENDICULAR BISECTOR
of this DIAMETER
Geometry
8
VISUAL ARTS 3rd ESO
Lessons and Activities
REGULAR PENTAGON
You can draw it knowing its
CIRCUMSCRIBED CIRCLE
Geometry
9
VISUAL ARTS 3rd ESO
Lessons and Activities
REGULAR HEXAGON
You can draw it knowing its
CIRCUMSCRIBED CIRCLE
Geometry
10
VISUAL ARTS 3rd ESO
Lessons and Activities
You can draw it knowing its side
Geometry
11
Name and Surname:
Class:
Draw a 60º angle with its vertex in B.
Draw a 90º angle with its vertex in A.
A
B
A
Draw a 45º angle with its vertex in A.
Draw a 15º angle with its vertex in A.
B
Draw the PERPENDICULAR BISECTOR of both SEGMENTS. Draw the ANGLE BISECTOR of both ANGLES.
A
B
Draw a CERCLE passing through A, B and C.
A
B
Draw an EQUILATERAL triangle knowing its AB SIDE.
B
A
B
B
A
C
A
A
Draw an EQUILATERAL triangle knowing its
CIRCUMSCRIBED circle.
A
B
B
Draw the CIRCUMSCRIBED circle of this triangle.
Draw the INSCRIBED circle of this triangle.
Would you be able to draw a REGULAR HEXAGON
knowing its circumscribed circle?
Name and Surname:
Draw a REGULAR PENTAGON inscribed in this circle.
Class:
Draw a REGULAR HEXAGON knowing its SIDE AB.
A
B
Would you be able of drawing a STAR POLYGON of 12 VERTEXS inscribed in this circle? When it is done, paint it.
Would you be able of drawing this? Paint it when it is done.
VISUAL ARTS 3rd ESO
Self Assessment
Name:
Surname:
YES
NO
Sometimes
Not at all
Do I like Geometry?
YES
NO
Have I understood teacher's explanations?
YES
NO
Some words
It has been difficult to understand the specific
vocabulary?
YES
NO
YES
NO
Few of
them
None of
them
YES
NO
YES
NO
YES
NO
Do I know how to draw an Angle Bisector and a
Perpendicular Bisector?
Do I know the difference between Regular and Irregular
Polygons?
YES, all of
them
Most of
them
Only the
half
Have I done properly
the
different
exercises
about
polygons?
Have I used properly the different drawing tools? (Set
square, pair of compasses,...)
Have I done clean drawings?
Have I done the exercises with interest?
Geometry
1
VISUAL ARTS 3rd ESO
Self Assessment
Explain with your own words all you have learned in this lesson.
…....................................................................................................................................
…....................................................................................................................................
…....................................................................................................................................
…....................................................................................................................................
…....................................................................................................................................
…....................................................................................................................................
Explain with your own words all you have to improve.
…....................................................................................................................................
…....................................................................................................................................
…....................................................................................................................................
…....................................................................................................................................
…....................................................................................................................................
…....................................................................................................................................
YES
NO
Do you think teacher's explanations have been enough to
understand this lesson?
What things would you like to change in this lesson?
…....................................................................................................................................
…....................................................................................................................................
…....................................................................................................................................
…....................................................................................................................................
…....................................................................................................................................
…....................................................................................................................................
…....................................................................................................................................
…....................................................................................................................................
…....................................................................................................................................
…....................................................................................................................................
…....................................................................................................................................
…....................................................................................................................................
Geometry
2