Geometry with the TI-84 Plus Silver Edition
Lines
Creation of primitive geometric objects as Points, Lines, Line Segments and many others is fun and easy using theCabri Jr™. App for the
Polygons
The information in this section is presented using screen shots from the StudyCards™ and Cabri Jr.Apps for the
Triangles
This section features theCabri Jr.App for the
Equilateral: all sides and angles equal
Isosceles: two sides and angles equal
Right: one 90 degree angle
Example: Draw an Isosceles Triangle
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Angles
Pythagorean Theorem
1.Create a segment
2.Find the middle of the segment
3.Trace a perpendicular line crossing the middle point
4.Trace a triangle using the two existing points of the segment and a point on the perpendicular line
Circles
This section features theCabri Jr.App for the
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| Diameter = 2*(radius) |
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| Circumference = π*(diameter) |
Circle |
| Area = π*(radius) 2 |
Diameter |
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Area
Circle’s
Equation
Geometric Formulas
All Perimeters |
| Triangle |
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| Rectangular Prism | Right Circular Cone |
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P = a+b+c+ ... | Perimeter | P = a+b+c | Surface | S = 2(hl+lw+hw) | Lateral |
| πr √ |
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Square |
| Area | A = | 1 | bh | Volume | V = lwh | Surface | S = | r2+h2 |
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| Parallelogram | 2 |
| Sphere |
| Total |
| πr √ | r2+h2+πr2 | |||||
Perimeter | P = 4s |
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| S = 4 πr2 | Surface | S = | |||||||
Area | A = s2 | Perimeter | P = a+b+c+d | Surface | Volume | V = |
| 1 | πr2 h | |||||
Rectangle |
| Area | A = bh | Volume | V = 4 πr3 | Frustum of a Cone | 3 | πh(r2+rR+R2) | ||||||
Perimeter | P = 2l+2w | Trapezoid |
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Area | A = lw | Perimeter | P = a+b+c+d | Right Circular Cylinder | Circular Sector |
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Lateral | S = 2 πrh |
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Circle |
| Area | A = (a+b)h | Area | A = | r2 | ||||||||
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Circumference C = 2 πr |
| 2 | Total | S = 2πrh + 2πr2 | Circular Ring |
| π(R2– r2) | |||||||
Area | A = πr 2 |
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| Surface | Area | A = | ||||||
© Texas Instruments, 2007 |
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| Volume | V = πr2h | education.ti.com/CabriJr | |||||||
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