Geometry All Around Us By: Arshia Halavatkar 1. Name the triangle by its sides and angles. 2. Are these lines parallel, perpendicular, skew, or oblique? 3. Name a measure of an exterior angle in this regular polygon. 4. What is the sum of all the interior angles in this polygon? 5. Give the measurement of one interior angle in this regular octagon. 6. Are these lines parallel, perpendicular, skew, or oblique? 7. What postulate would prove these two triangles congruent? 8. What postulate would prove these two triangles similar? 9. Are these parallel, perpendicular, skew, or oblique? 10. T/F: The measure of all interior angles = the measure of all exterior angles Answer key: 1. Obtuse Isosceles 2. Parallel 3. 90 4. 360 5. 105 6. Perpendicular 7. HL - Hypotenuse Leg 8. SSS - Side Side Side 9. Skew 10. True