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Java Games: Flashcards, matching, concentration, and word search. |
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Geometry Gems-Part 2
Grade 4--Houghton Mifflin Math--Learn the terms for polygons, rays, and angles.
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| A | B |
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| triangle | 3 sides and 3 angles |
| quadrilateral | 4 sides and 4 angles |
| pentagon | 5 sides and 5 angles |
| hexagon | 6 sides and 6 angles |
| octagon | 8 sides and 8 angles |
| ray | one end point and goes on without end in one direction |
| angle | formed by two rays with a common endpoint |
| vertex | common endpoint or the center point of an angle |
| right angle | angle that forms a square corner |
| obtuse angle | angle that is greater than a right angle (90 degrees) |
| acute angle | angle is less than a right angle |
| straight angle | angle forms a straight line |
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Grade 4 Instructor |
Mellette Elementary School |
| Watertown, SD |
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