30-60-90 triangles 5-27-09 IMP3 Sia. Today’s Agenda Bell Ringer Review 45-45-90 30-60-90 triangles Pythagorean Theorem worksheet due Friday, 5-29- 09.

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Presentation transcript:

triangles IMP3 Sia

Today’s Agenda Bell Ringer Review triangles Pythagorean Theorem worksheet due Friday,

Announcements HW Hall this Thursday during 9th period ACT session this Saturday in room 208 from 8am- 10am Turn in your calculators by the end of this week, or else you will get a debt slip from me next Monday.

A right isosceles (two sides congruent) triangle is a special type of triangle: the triangle.

Another type of triangle… Another special right triangle is the triangle.

Why? Memorizing the side lengths of these special triangles saves us TIME we would spend using the Pythagorean Theorem.

The side opposite the smallest angle is the smallest side. The HYPOTENUSE is DOUBLE the smallest side. The other leg is the smallest side times the square root of 3.

Examples 7 30º 60º 14 30º 24 60º 12