Triangles and Quadrilateral Definitions
| __ | 1. | acute | | A. | Δ ABC, where AB = AC = BC = 20 km | | __ | 2. | equilateral | | B. | Δ all three angles less than 90° | | __ | 3. | isosceles | | C. | Δ ABC, where AB = 55 km, AC = 55 km and BC = 32 km | | __ | 4. | obtuse | | D. | A triangle has angle measurements of 90°, 28°, and 62° | | __ | 5. | parallelogram | | E. | A quadrilateral w/ ONLY 1 pair of opposite parallel sides | | __ | 6. | rectangle | | F. | Δ ABC, where AB = 11 in, BC = 14 in and AC = 7 in | | __ | 7. | right | | G. | A parallelogram with all sides congruent & all right ∠s | | __ | 8. | scalene | | H. | A parallelogram w/ 2 sets of congruent sides & all right ∠s | | __ | 9. | square | | I. | Δ ABC, where ∠A = 135°, ∠B = 16° and ∠C = 29 | | __ | 10. | trapezoid | | J. | A quadrilateral with 2 sets of congruent and parallel sides |
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