# GeoBasics & GeoCircles

- Author:
- Mark Brouwer

Answer the questions below the diagram using your understanding of the learning targets, and GeoGebra tools.

## GeoBasics: I can explain and use the basic terminology of geometry

- GeoBasics1.1: I know the four, undefined terms: point, line,plane, solid and can use them as the basis of geometric proofs (G.PL.1)(G.PL.3) (G.LP.1)
- GeoBasics1.2: I explain and can use the following terms: segment, ray, intersection, parallel and perpendicular lines, vertical and adjacent angles, interior and exterior angles, complementary and supplementary angles, angle and segment bisectors, right angle, transversal, equidistant, congruent (G.PL.3)

## GeoCircles: I can explain and use the basic terminology of circular geometry

- GeoCircles1.1: I can identify, explain and use and use the following parts of a circle: radius, diameter, circumference, area (G.Cl.1)
- GeoCircles1.2: I can identify, define and use the following constructions on a circle: arc length, chord, secant, tangent, central, inscribed and circumscribed angles, sector (G.Cl.1) (G.Cl.2)

## GeoCircles1.1

1. Select the diameter of circle B:

## GeoCircles1.1

2. Select a radius of circle B:

## GeoCircles1.2

3. Select an inscribed angle:

## GeoCircles1.2

4. Select all central angles:

## GeoCircles1.2

5. Select all circumscribed angles:

## GeoCircles1.2

6. Select all chords of circle B:

## GeoCircles1.2

7. Select all secants of circle B:

## GeoCircles1.2

8. What is the mMSB

## GeoBasics1.2

9. Which line(s) are perpendicular to ?

## GeoBasics1.2

10. Select the angle(s) corresponding to SMB

## GeoBasics1.2

11. Select the angle(s) supplementary to VMS

## GeoBasics1.2

12. Select the angle(s) vertical to FMC:

## GeoBasics1.2

13. Select the angle(s) complementary to SMW

## GeoBasics1.2

14. Select the angle(s) supplementary to SBM: