1. Blue – 2/23/2015 Gold – 2/24/2015

2. 1. Name 2 pair of alternate interior angles  5 &  3 and  4 &  1 2. What is the sum of m  1 + m  2 + m  3? 180° 3. If m  4 = 65° and m  5 = 50°, what is m  2? (hint: the sum of triangle angles = 180  ) 65° 1 3 2 45 Solve each equation. 4. 30 + 90 + x = 180  5. 55 + x + 105 = 180  6. x+ 58 = 90  60  70  32 

4. The sum of the angle measures in a triangle equal 180° 3 2 1  1 +  2 +  3 = 180°

5. 57 1. 11 33 117 11 11 2. 52.2 44.7 33 3.

6. Acute: Obtuse: A triangle in which all 3 angles are less than 90˚. A triangle in which one and only one angle is greater than 90˚& less than 180˚ 108  44  28  B C A 57  47  76  G HI

7. Right: Equiangular: A triangle in which one and only one angle is 90˚ A triangle in which all 3 angles are the same measure.

8.  Equilateral triangle: A triangle with three congruent (equal) sides and three equal angles These marks indicate equality.

9.  Isosceles triangle: A triangle with at least two congruent (equal) sides

10.  Right triangle: Has only one right angle (90 degrees) This box indicates a right angle or a 90-degree angle.

11.  Scalene triangle: A triangle that has no congruent (equal) sides

12.  Classify each type of triangle based on sides and angles. 12 3 4 Equilateral & Equilangular Right & Scalene Isosceles & Acute Scalene & Obtuse 60  30  50  80  100  50  30 

13. The measure of an exterior angle in a triangle is the sum of the measures of the 2 remote interior angles exterior angle remote interior angles  A =  C +  D

14. The measure of an exterior angle in a triangle is the sum of the measures of the 2 remote interior angles 3 2 1 4 exterior angle remote interior angles  4 =  1 +  2