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### 24 Cards in this Set

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 HOW MANY DEGREES IN A RGHT ANGLE 90 HOW MANY DEGREES IN A STRAIGHT LINE 180 THERE ARE HOW MANY DEGREES INN A TRIANGLE 180 THERE ARE ______IN A CIRCLE 360 A FOUR SIDED FIGURE HAS HOW MANY DEGREES 360 WHEN TWO LINES INTERSECT ANGLES ACROSS FROM EACH OTHER (VERTICLE ANGLES) ARE EQUAL AREA OF A TRIANGLE FORMULA 1/2 BxH THE PERIMETER OF ANY FIGURE IS SUM OF ITS SIDES ANGELS GREATER THAN 0 BUT LESS THAN 90 DEGREES ARE CALLED? ACUTE ANGLES ANGLES EQUAL TO 90 DEGREES ARE CALLED RIGHT ANGELS ANGELS THAT SUM UP TO 90 DEGREES ARE CALLED COMPLEMENTARY ANGLES. THINK OF C FOR CORNER (THE ANGLE FORMS A 90 DEGREE CORNER ANGLE)AND C FOR COMPLEMENTARY AN ANGLE THAT IS GREATER THAN 90 DEGREES BUT LESS THAN 180 IS CALLED AN OBTUSE ANGLE. THINK OF OBTUSE AS OBESE(OR FAT)ANGLE AN ANGLE THAT MEASURE EXACTLY 180 DEGREES IS CALLED A STRAIGHT ANGLE ANGLES THAT SUM UP TO 180 DEGREES ARE CALLED SUPPLEMENTARY HINTS THINK OF S FOR STRAIGHT ANGELS AND S FOR SUPPLEMANTARY ANGLES BE CAREFUL NOT TO CONFUSE COMPLEMENTARY (C FOR COMPLEMANTARY/CORNER) HINTS IF YOU'RE LIKELY TO GET COMPLEMENTARY AND SUPP ANGLES CONFUSED, THINK OF ALPHABET--C COMES BEFORE S AND 90 COMES BEFORE 180 ANGLES AROUND A POINT TOTAL 360 IN ANGLES AROUND A POINT FIRST DEFINE THE POINT FORMED WHERE THE LINES CROSS. THEN ANGLES THAT ARE OPPOSITE EACH OTHER HAVE EQUAL MEASURES AND ARE CALLED VERTICAL ANGLES NOTE THAT ALL ODD AND EVEN NUMBERED ANGLES ARE EQUAL. DO NOT ZIG ZAG EX. A TRIANGLE WITH 3 EQ SIDES AND 3 EQ ANGLES IS CALLED EQUILATERAL A TRIANGLE WITH 2 EQ SIDES AND ANGLES IS CALLED A ISOSCELES ANGELS OPPEOSITE EQUAL ASIDES IN A ISOSCELES TRIANGLE ARE EQUAL IN ANY TYPE OF TRIANGLE, THE SUM OF THE INTERIOR ANGLES IS 180 THE MEASURE OF AN EXTERIOR ANGLE OF A TRIANGLE IS EQUAL TO THE SUM OF THE TWO REMOTE INTERIOR ANGLES