Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
SIMMS Level 3 Module 14 Activity 3 Spherical Geometry Notes Key No. 1 2 3 4 5 6 7 8 Euclidian Fact Two points determine a line Picture Spherical Fact A great circle forms a line B A 2 lines intersect at one point (and form 4 angles) Through a point not on a line there exists one parallel line 2 3 4 1 P 56 87 12 43 No parallel lines exist in spherical geometry Perpendicular lines intersect twice and form 8 right angles 3 non-collinear points form a triangle 3 non-collinear points form a triangle Triangle sum is 1800. Triangle sum is greater than 180 and less than 540 2 3 A triangle can have one obtuse angle (one right angle) A triangle can have more than one obtuse angle (one right angle) Each angle measure of an equiangular triangle is 60. Each angle measure of an equiangular triangle can vary. Page 1 of 1 B A 2 lines intersect at two points(and form 8 angles) Perpendicular lines form 4 right angles 1 Picture 56 87 12 43 B A C