# EASE Module 2 Circles

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Published on 2011 June 16th

Description
This is a learning material (module). It contains a detailed discussion on tangents and secants. It helps develop learner's understanding of the relationship between a tangent and the radius of the circle; and how secant and tangent in a circle create other properties particularly on angles that they form.
Objective
1. to define and illustrate tangents and secants

2. to show the relationship between a tangent and a radius of a circle

3. to identify the angles formed by tangents and secants

4. to determine the measures of angles formed by tangents and secants

#### Curriculum Information

 Education Type K to 12 Grade Level Grade 10 Learning Area Mathematics Content/Topic Geometry Intended Users Learners Competencies Derives inductively the relations among chords arcs central angles and inscribed angles Illustrates secants tangents segments and sectors of a circle Proves theorems on secants tangents and segments Solves problems on circles