QRT-3-MATH-7-WEEK-1-2.docx - PHILIPPINE CENTRAL ISLANDS...

PHILIPPINE CENTRAL ISLANDS
COLLEGE
San Jose, Occidental Mindoro
Mathematics
Quarter III – Module 1 - Week 1 & 2
Basic Concepts in Geometry and
Kinds of Angles
What I know
1

Before proceeding to our lesson in this module, let us first check your prior knowledge for
this topic. Answer the questions that follow on a separate sheet of paper. Choose the letter of
your answer.
1. Which is NOT an undefined term in geometry?
2. What is used to name a point?
3. Which has no width but has a length and extends indefinitely on both sides?
4. What term is illustrated by the figure shown above?
A. angle B. line C. plane D. segment
5. Which is the correct name of the figure?
6. Which is a subset of a line that has one endpoint and extends indefinitely on one side?
7. Which is a subset of a line which has two endpoints.
A. B.
9. Which illustrates a ray?
10. Which shows a line segment?
11. An angle that measures less than 90
๐
but more than 0
๐
12. If m ABC is 130
o
, then it is a/an _______.
A. acute angle B. obtuse angle C. right angle D. straight angle
2
8. The figure for ray AB is this . Which is wrong in the preceding
statement
A
H

13. Which of the following figure shows an acute angle?
A. B. C. D.
14. An angle whose measure is exactly 90
o
is a/an _______.
15. What instrument is used to measure an angle?
Lesson 1; Undefined Terms in Geometry
What’s In
This module marks the start of another chapter on our lessons in Mathematics for Grade
7 learners. For the entire quarter, we will be discussing topics about Geometry – the branch of
mathematics that deals with the measurement, properties, and relationships of points, lines,
angles, surfaces, and solids.
I am sure you already have an idea about Geometry since this topic is also discussed on lower
grade levels. To check your previous knowledge, answer the activity below.
Directions : The array of letters below includes ten basic geometric terms including the two
words already marked. These words are arranged horizontally, vertically, and diagonally. On a
separate piece of paper, list down all the geometric terms that you can find.