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Transcript
GEOMETRY JEOPARDY Polygons Circles Symmetry & Transformations Lines & Angles Triangles & Congruency 100 100 100 100 100 200 200 200 200 200 300 300 300 300 300 400 400 400 400 400 500 500 500 500 500 A polygon is a flat, closed plane shape made up of three or more line segments called sides TRUE OR FALSE: A QUADRILATERAL IS A POLYGON WITH TWO SIDES A QUADRILATERAL IS A POLYGON WITH FOUR SIDES A SIX SIDED SHAPE IS CALLED A _________? WHAT ARE THE NAME FOR QUADRILATERALS WITH FOUR EQUAL SIDES? A SQUARE AND A RHOMBUS!! SQUARE RHOMBUS NAME THE GEOMETRIC FIGURE EACH SIGN REPRESENTS: Octagon Rectangle Triangle CIRCLES ARE A TYPE OF POLYGON? A CIRCLE IS CURVED, NOT FLAT, AND IS NOT MADE UP OF ANY LINE SEGMENTS. A line is a straight path that extends in two directions. Do Perpendicular Lines Interest at: • RIGHT ANGLES • ACUTE ANGLES • OBTUSE ANGLES When perpendicular lines intersect, they create right angles. Right Angle Which is an example of parallel lines? A: B: C: B: Parallel lines do not intersect If given the name <ABC, which angle is correct? A A: B: B B C C: A A C C B A: A B C Since B is the middle letter in the angle name, <ABC, B has to be the vertex of the angle. Which direction would ray MB need to be moved to make an obtuse angle? B M R Ray MB would need to be moved to the left, to make an obtuse angle because an obtuse angle is greater than 90 degrees. B B M R M R Congruent figures are the same shape, but can be different sizes? Congruent figures are the same shape AND size. If two figures are similar, are they A: The same shape, but different sizes? B: Different shapes, but the same size? A: The same shape, but not necessarily the same size. Similar figures have to be the same shape, however, they can be the same or different sizes. Are these figures: •Congruent •Similar but not congruent •Neither The figures are similar because they are the same shape, but not the same size. Do all figures have a line or lines of symmetry? All figures do not have a line of symmetry. Has line of symmetry Does not have symmetry What is another name for a line of symmetry? A: A curved line B: A diagonal line C: A perfect line D: A fold line Another name for a line of symmetry is a FOLD LINE! A line of symmetry separates a figure into two parts that math exactly. You can FOLD a shape along the line(s) of symmetry and the pieces will lay directly on top of another. How many lines of symmetry does this figure have? A: One B: Three C: Four D: Five Which triangle is an equilateral triangle? A B C A scalene triangle has three sides and angles that are equal? Letter A: Is an equilateral triangle An equilateral triangle has three sides and angles that are equal. FALSE!!!!! A scalene triangle has NO sides or angles that are equal. An equilateral triangle has three sides and angles that are equal. SCALENE EQUILATERAL The Answer is B: FIVE 4 3 5 2 1 Another name for a translation is a “step” Another name for a translation is a SLIDE!! A translation is when you move a figure up, down, or over. WHICH IS AN EXAMPLE OF A REFLECTION: A B C A: A reflection is when you FLIP an object over a line. Think of the object looking “opposite” or think of a “mirror effect.” A radius of a circle is half the length of the diameter? B A B A The radius is a line segment whose end points are the center of the circle and a point on the circle. What is the name of the circle below? S A M A: Circle MS B: Circle A C: Circle MSA S A M B: Circle A A circle is named by its center point. This is circle A Which circle shows the diameter? A B A A A B B B C Circle B shows the diameter A B The diameter of a circle is a line segment that goes trough the center of a circle and whose end points are on the circle. If the radius of the circle is 2, how long would the diameter be? B A The radius is half the length of the diameter so if the radius is 2, the diameter would be 4!!! C B 2 A 2