 | Lyn Baker - Juvenile Nonfiction - 2005 - 168 pages
...that for any triangle the angles always add up to 180°. The angle sum of a quadrilateral is 360°. The exterior angle of a triangle is equal to the sum of the interior opposite angles. These results can be used to prove other results about angles and triangles. Draw... | |
 | Lyn Baker - Juvenile Nonfiction - 2004 - 174 pages
...sum of a quadrilateral is 360°. When a side of a triangle is extended an exterior angle is formed. The exterior angle of a triangle is equal to the sum of the interior opposite angles. A polygon is a many-sided plane figure. Some polygons have special names. These include... | |
 | Dave Kirkby, Sue Bright - Juvenile Nonfiction - 2005 - 230 pages
...triangle is 180° Know and use the fact that the sum of the angles in a quadrilateral is 360° Understand that the exterior angle of a triangle is equal to the sum of the two interior opposite angles interior exterior The sum of the angles in any triangle is 180°:... | |
 | Ajit Kalra, James Stamell - Juvenile Nonfiction - 2005 - 592 pages
...(corresponding angles) Add equations (7) and (2): ¿ACE + ¿ECD = ¿A + ¿B .-. ¿ACD = ¿A + ¿B .-. the exterior angle of a triangle is equal to the sum of the two interior opposite angles. Property 3 If two sides of a triangle are equal, the angles opposite... | |
 | Lyn Baker - Juvenile Nonfiction - 2006 - 182 pages
...lines are parallel. The angle sum of a triangle is 180°. The angle sum of a quadrilateral is 360°. The exterior angle of a triangle is equal to the sum of the interior opposite angles. A scalene triangle has no sides equal in length. An isosceles triangle has two sides... | |
 | 510 pages
...in one hour = 60 Km. 40 + 60 100 Hence, average speed = r — — * " ii Ci = 50 kmph We know that exterior angle of a triangle is equal to the sum of the interior opposite angles. 130° = x + 60° or x = 130° - 60° = 70° 14. (C) 15. (D) 16. (B) 17. (A) 19.(C)... | |
 | Jeff Geha - Juvenile Nonfiction - 2007 - 364 pages
...angles are equal. 4. Angle sum of a triangle = 1 80° 5. Angle sum of a quadrilateral =360° Le. 6. The exterior angle of a triangle is equal to the sum of the two opposite interior angles. (B) Properties of Polygons 7. Angle sum of any polygon = (n - 2)... | |
 | Robert Postman, Ryan Postman - Study Aids - 2007 - 403 pages
...measures equals 180. x + 2x + 60= 180 Solve for x. 3* + 60 = 180 3x = 120 =*> x = 40. The measure of the exterior angle of a triangle is equal to the sum of the two CONQUERING SAT MATH remote interior angles. The remote interior angles are the two angles most... | |
 | 616 pages
...Distance travelled in one hour = 60 Km. Hence, average speed = 40 + 60 _ 100 2 2 = 50 kmph We know that exterior angle of a triangle is equal to the sum of the interior opposite angles 130° = x + 60° or x = 130° - 60° = 70° 134. (c) 135. (d) 136.(b) 137.(a) 142.(c)... | |
 | 286 pages
...one hour = 60 Km. Hence, average speed = 40 + 60 100 2 12. (C) 13. (B) 18. (A) = 50 kmph We know that exterior angle of a triangle is equal to the sum of the interior opposite angles. 130° = x + 60° or x = 130° - 60° = 70° 20.(D) 21. (C) 22.(C) TEST No. 8 I. (C)... | |
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To prove that the exterior angle of a triangle is equal to the sum of the two interior opposite angles (see fig. 
