| 2001 - 578 pages
...corresponding angles. c Understand a proof that the angle sum of a triangle is 180° and a proof that **the exterior angle of a triangle is equal to the sum of** the interior angles at the other two vertices; explain why the angle sum of any quadrilateral is 360°.... | |
| 2001 - 588 pages
...structured way the proof that the angle sum of a triangle is 180°. Question 6 deals with the proof that **the exterior angle of a triangle is equal to the sum of** the opposite interior angles. This is not structured but it is essentially the same proof and should... | |
| Susan Ball, Sue Briggs, Margaret Mackenzie - 2003 - 212 pages
...only facts that have already been proved, copy and complete the following proofs. a. B is shaded red **The exterior angle of a triangle is equal to the sum of** the two opposite interior angles. b. Ld = ^a + ^b (exterior angle is equal to the sum of the two opposite... | |
| 2003 - 232 pages
...on a triangle) so x = b + c The exterior angle of a triangle is made by extending one of the sides. **The exterior angle of a triangle is equal to the sum of** the two opposite interior angles of the triangle. Example Calculate the size of the lettered angles.... | |
| Sue Bright, Lynne McClure - 2004 - 232 pages
...\&0° 3x + 60° = 150° 3x = 120° x = 40° and 2x = 60° The sum of angles in a triangle is 180° **The exterior angle of a triangle is equal to the sum of the two interior opposite angles.** d) Calculate the size of the lettered angles, giving reasons for your answers. a) b) Look at the blue... | |
| 2002 - 108 pages
...(not the included angle) - the ambiguous case Fl 6. The exterior angles of a triangle FS4 Know that **the exterior angle of a triangle is equal to the sum of the two interior opposite angles** ....Q^r.... The triangle The sum of the angles of a triangle 1 Calculate the size of each unmarked... | |
| Ajit Kalra, James Stamell - 2004 - 616 pages
...important rules about the angles in triangles: The sum of the interior angles of a triangle is 180°. and **The exterior angle of a triangle is equal to the sum of** the 2 interior opposite angles. Examples Find the size of the unknown angle in AABC. a + 55 + 30 =... | |
| Lyn Baker - 2001 - 316 pages
...[vertically opposite ZADC] ZDEF + 65°+48°= 180° [angle sum of atriangle] л ZDEF =67° С Exterior Angles **The exterior angle of a triangle is equal to the sum of** the /a° interior opposite angles. (a + b) Example: Find the value of x. (а) ч 67o (b) Solution:... | |
| M. J. Tipler - 2004 - 468 pages
...interior angles of a triangle add to 180° Example m + 57° + 64° = 1 80° m = 180° -57° -64° = 59° **The exterior angle of a triangle is equal to the sum of** the two opposite interior angles. Example / = 47° + 58° = 105° Practice Questions 4, 5, 17, 40 Angles... | |
| Maryanne Tipler - 2004 - 150 pages
...triangles Angle x is an interior angle of the triangle. Angle v is an exterior angle ol the triangle. **The exterior angle of a triangle is equal to the sum of** the two opposite interior angles. „pie / = 47° + 58c = 105° Quick questions Find the value x. ab... | |
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