Geometrical figures
- 1. FUN WITH GEOMETRICAL FIGURES
- 2. FINDING SHAPES: USE THE FINDING SHAPES WORKSHEET PROVIDED AND FIND SHAPES AROUND THE ROOM THAT FIT INTO EACH CATEGORY: CIRCLES TRIANGLES SQUARES RECTANGLES FIND AS MANY SHAPES AS YOU CAN IN 5 MINUTES, GO!
- 4. COMMON SHAPES & CHARACTERISTISCS: What are some characteristics of a circle? What about a triangle? A square and rectangle? What do we notice about the square and rectangle and their similarities?
- 5. COMMON SHAPES: CIRCLE – A SET OF POINTS EQUAL DISTANCE FROM A GIVEN POINT, CALLED THE CENTER OF THE CIRCLE WITH NO ANGLES. RECTANGLE – SQUARE – TRIANGLE –
- 6. COMMON SHAPES: CIRCLE – A SET OF POINTS EQUAL DISTANCE FROM A GIVEN POINT, CALLED THE CENTER OF THE CIRCLE WITH NO ANGLES. RECTANGLE – A SHAPE THAT HAS 4 POINTS AT 4 CORNERS WITH 2 SHORT SIDES OF EQUAL LENGTH THAT ARE OPPOSITE OF EACH OTHER AND 2 LONG SIDES OF EQUAL LENGTH THAT ARE OPPOSITE OF EACH OTHER. THIS SHAPE HAS 4 RIGHT ANGLES. SQUARE – TRIANGLE –
- 7. COMMON SHAPES: CIRCLE – A SET OF POINTS EQUAL DISTANCE FROM A GIVEN POINT, CALLED THE CENTER OF THE CIRCLE WITH NO ANGLES. RECTANGLE – A SHAPE THAT HAS 4 POINTS AT 4 CORNERS WITH 2 SHORT SIDES OF EQUAL LENGTH THAT ARE OPPOSITE OF EACH OTHER AND 2 LONG SIDES OF EQUAL LENGTH THAT ARE OPPOSITE OF EACH OTHER. THIS SHAPE HAS 4 RIGHT ANGLES SQUARE – A RECTANGLE WITH 4 CONGRUENT SIDES AND 4 RIGHT ANGLES. TRIANGLE -
- 8. COMMON SHAPES: CIRCLE – A SET OF POINTS EQUAL DISTANCE FROM A GIVEN POINT, CALLED THE CENTER OF THE CIRCLE WITH NO ANGLES. RECTANGLE – A SHAPE THAT HAS 4 POINTS AT 4 CORNERS WITH 2 SHORT SIDES OF EQUAL LENGTH THAT ARE OPPOSITE OF EACH OTHER AND 2 LONG SIDES OF EQUAL LENGTH THAT ARE OPPOSITE OF EACH OTHER. THIS SHAPE HAS 4 RIGHT ANGLES SQUARE – A RECTANGLE WITH 4 CONGRUENT SIDES AND 4 RIGHT ANGLES. TRIANGLE – A SHAPE WITH 3 SIDES AND 3 ANGLES. **Now draw each shape next to its definition**
- 9. TYPES OF TRIANGLES: ACUTE ANGLE – AN ANGLE LESS THAN 90 DEGREES --show me with your arms what this angle looks like? OBTUSE ANGLE – AN ANGLE GREATER THAN 90 DEGREES -- show me with your arms what this angle looks like? RIGHT TRIANGLE – A TRIANGLE WITH ONE 90 DEGREE ANGLE AND 2 ACUTE ANGLES --show me with your arms what this angle looks like?
- 10. NOW LET’S TRY TO DRAW THESE! What do you notice about the sides of these different triangles? What about the shapes each triangle makes? -- Let’s Discuss!
- 11. SCALENE TRIANGLE – ALL 3 SIDES AND ALL 3 ANGLES ARE DIFFERENT --Try and draw this! EQUILATERAL TRIANGLE – ALL 3 ANGLES ARE THE SAME AND ALL 3 SIDES ARE CONGRUENT --Try and draw this ISOSCELES TRIANGLE – 2 ANGLES ARE THE SAME AND 2 SIDES ARE CONGRUENT --Try and draw this
- 12. --CAN A TRIANGLE BE ACUTE AND EQUILATERAL? -- OBTUSE AND ISOCLELES? -- ANY COMBINATIONS OF THESE? WHY OR WHY NOT? TALK WITH A PARTNER.