Geometry Scrapbook

Theme: Hockey

By: Shane Hughes7th Hour

1/4/2012

Table of ContentsPage 3-Parallel LinesPage 4-Two Congruent ObjectsPage 5-Vertical AnglesPage 6-Perpendicular LinesPage 7-Intersecting LinesPage 8-Supplementary AnglesPage 9-Corresponding Angles

Page 10-AdjacentPage 11-Obtuse AnglePage 12-Regular PolygonPage 13-Vertex AnglePage 14-Isosceles TrianglePage 15-Right TrianglePage 16-HypotenusePage 17-Pythagoras

IF THE TOP AND BOTTOM OF THE BOARDS WERE NOT PARALLEL THEN THE BOARDS WOULD NOT BE THE SAME HEIGHT ALL THE WAY AROUND THE RINK. THEY MUST BE PARALLEL SO THE BOARDS ARE EVEN ALL THE WAY AROUND.

Parallel LinesLines are parallel if they lie in the same plane, and are the same distance apart over their entire length.

IF THE TWO PUCKS WERE NOT CONGRUENT THEN YOU WOULDN’T KNOW IF YOU WERE PLAYING WITH A NORMAL SIZED PUCK. ALL PUCKS SHOULD BE THE SAME SO YOU ARE ALWAYS USE THE SAME SIZE.

Two Congruent ObjectsTwo objects are congruent if they have the same dimensions and shape.

I THINK THE PERSON CREATE THESE JUST TO PUT HOCKEY STICKS TOGETHER AND TO MAKE THE PICTURE LOOK BETTER. I DON’T THINK HE EVER THOUGHT ABOUT MAKING VERTICAL ANGLES.

Vertical Angles

Vertical angles are a pair of non-adjacent angles formed by the intersection of two straight lines.

IF THE LINES WERE NOT PERPENDICULAR, THEN THE RED LINE WOULD NOT BE IN THE MIDDLE OF THE RINK. THE LINE WOULD NOT BE STRAIGHT.

Perpendicular LinesA line is perpendicular to another if it meets or crosses it at right angles.

IT IS IMPORTANT BECAUSE IF THEY DIDN’T INTERSECT, THEN THE LINES BEHIND THE GOAL WOULD NEVER STOP. IF THEY DIDN’T INTERSECT THEN THE GOALIE WOULD NOT BE ABLE TO TELL HOW FAR HE CAN GO OUT OF THE GOAL.

Intersecting LinesIntersecting lines are two or more lines that meet at a common point

IF THE ANGLES WERE NOT SUPPLEMENTARY THEN THEY WOULD NOT ADD UP TO 180 DEGREES.

Supplementary Angles Two Angles are Supplementary if they add up to 180 degrees.

THEY WOULD NOT EQUAL THE SAME DEGREES.

Corresponding Angles Corresponding angles are created where a transversal crosses other lines. The corresponding angles are the ones at the same location at each intersection.

Adjacent-Two angles that share a common side and a common vertex, but do not overlap.

Obtuse AngleAn angle whose measure is greater than 90 degrees but less than 180 degrees

Regular PolygonA convex polygon whose angles and sides are all congruent

Vertex AngleThe angle formed by the equilateral sides of an isosceles

triangle

Isosceles TriangleA triangle with two sides of equal length

Right TriangleA triangle that has a 90 degree angle

HypotenuseThe side opposite the right angle in a right triangle

PythagorasIn a right angled triangle the square of the long side is equal to the sum of the squares of the other two sides.