Triangles Unit 3 Review Material

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Presentation transcript:

Triangles Unit 3 Review Material Homework: Textbook P.152-155 #1, 2, 6, 9, 11, 13, 14

Vocabulary Triangles Angles Equilateral triangle: all sides and angles are congruent. Isosceles triangle: has two congruent sides and two congruent angles. Scalene triangle: has no congruent sides. Acute: smaller than 90 Obtuse: larger than 90 Right: equal to 90

Pythagorean Theorem The hypotenuse is the longest side in a right triangle. The hypotenuse is always the side directly opposite the right angle. The hypotenuse, or missing side measurements, can be found using the following formula: a b c

Congruent Angles Line 1 and 2 are parallel. 3 4 5 6 7 8 Line 1 Line 2 Transversal: a line intersecting two parallel lines Line 1 and 2 are parallel. Alternate interior angles are congruent. 27 and 36 Alternate exterior angles are congruent. 18 and 45 Corresponding angles are congruent. 13 and 68 24 and 57 Opposite Angles are congruent. 16 and 38 25 and 47