Lesson: BASIC CONCEPTS AND TERMS IN GEOMETRY
Learning Competency: Represent point, line and plane using concrete and pictorial models
WHAT TO DO: Identify which object below would represent a point, line, or a plane.
Write your answer in the corresponding column.
Blackboard
Corner of a table
Laser
Electric wire
Surface of a table
Paper
Wall
Edge of a table
Tip of a ballpen
Intersection of a side
Ceiling
Objects that could represent
a point
Objects that could represent
a line
Objects that could represent
a plane
Lesson: CLASSIFICATION OF ANGLES ACCORDING TO ITS MEASURE
Learning Competency: Classifies the different kinds of angles
WHAT TO DO: Classify the different angles that you can get from the given figure.
Write it on the corresponding column in the table below.
ACUTE ANGLE
RIGHT ANGLE
OBTUSE ANGLE
Lesson: ADJACENT ANGLES AND LINEAR PAIR
Learning Competency: Derives relationships of geometric figures using measurements and by
inductive reasoning; supplementary angles, complementary angles, equal angles, vertical
angles, adjacent angles, linear pair, perpendicular lines and parallel lines.
WHAT TO DO: Identify each pair of angles.
Write adjacent angles or linear pair on the space provided
1. ∟1 and ∟2 =
2. ∟1 and ∟6 =
3. ∟3 and ∟2 =
4. ∟4 and ∟5 =
5. ∟5 and ∟6 =
Lesson: ANGLE RELATIONSHIPS FORMED BY PARALLEL LINES CUT BY A
TRANSVERSAL
Learning Competency: Derives relationship among angles formed by parallel lines cut by a
transversal using measurement and by inductive reasoning.
WHAT TO DO: Write the angle relationship for each pair of angles.
Use the figure below.
E
G
I
K
F
H
J
L
Corresponding angle
Alternate exterior angle
Alternate interior angle
Same side exterior angle
Same side interior angle
a. ∟J and ∟F _________________
b. ∟E and ∟K _________________
c. ∟J and ∟G _________________
d. ∟G and ∟I _________________
e. ∟E and ∟L _________________
Lesson: ILLUSTRATING POLYGONS: (a) CONVEXITY; (b) ANGLES; and (c) SIDES
Learning Competency: Illustrates polygons; (a) convexity; (b) angles; and (c) sides
WHAT TO DO: Identify the parts of the polygon.
Classify whether the given are; angles, sides, vertices, diagonals, exterior angle. Use the figure
below.
A
1. A, B, C, D, E = ______________
2. AB, BC, CD, DE, EA = ________
E
B
3. ∟A, ∟B,∟C, ∟D, ∟E = ______
4. ∟MCD = __________________
5. AC and AD = _______________
C
D
M