Hello… Please get the gold warm up off the back desk.

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Presentation transcript:

Hello… Please get the gold warm up off the back desk

Just for fun… do these (on the back of your warm up) 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? 65° Find all the angle measures 50° 40° 90° 40° 90° 130° 50°

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3.5 Triangle Sum Theorem & Exterior Angle Theorem

Triangle Sum Theorem The sum of the angle measures in a triangle equal 180° m<1 + m<2 + m<3 = 180°

Exterior Angle Theorem (your new best friend) 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 m<4 = m<1 + m<2

an example with numbers x 82° 30° y find x & y x = 68° y = 112° 40x10x 2 30xfind all the angle measures 80°, 60°, 40° Do you hear the sirens?????

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Pg , 43 – 53 Proof Practice