Unit 9 Math Vocab by Abi Bloomfield

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Slide Notes

Unit 9 Math Vocab

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PRESENTATION OUTLINE

LINE

Contains 2 points
Both directions
Flat

POINT

EXACT LOCATION

SEGEMENT

PART OF A LINE WITH 2 END POINTS

RAY

PART OF A LINE WITH ONE POINT

ENDPOINT

POINT MARKING THE END OF A LINE SEGMENT OR A RAY

VERTEX

POINT WHERE 2 OR MORE LINE SEGMENTS MEET

ANGLE

2 RAYS AT A VERTEX

Photo by zebble

PARALLEL LINES

Lines that are equal to each other
Don’t intersect

PERPENDICULAR LINES

LINES THAT DO INTERSECT

10.

INTERSECTING LINES

LINES THAT SHARES A COMMON POINT

11.

RIGHT ANGLE

EXACTLY 90˚

12.

STRAIGHT ANGLE

180˚

13.

ACUTE ANGLE

LESS THEN 90˚

14.

OBTUSE ANGLE

91˚- 179˚

15.

COMPLEMENTARY ANGLES

ANGLES WHOSE SUM=90˚

16.

SUPPLEMENTARY ANGLES

ANGLES WHOSE SUM = 180˚

17.

Untitled Slide

18.

POLYGON

Closed Figure
3 or more sides
No curved sides
No intersecting lines

19.

REGULAR POLYGON

ALL SIDES + ANGLES ARE CONGRUENT (EQUAL)

Photo by readerwalker

20.

TRIANGLE

Has three sides called scalene, isosceles, equilateral.
They also have three angles called acute, obtuse, and rights.

Photo by globochem3x1minus1

21.

QUADRILATERALS

4 SIDES

Photo by oschene

22.

QUADRANGLES

4 ANGLES

23.

TRAPEZIUM

NO PARALLEL SIDES

Photo by NASA's Marshall Space Flight Center

24.

KITE

25.

TRAPEZOIDS

1 PAIR OF PARALLEL LINES

Photo by McDowell-Craig

26.

PARALLELOGRAM

2 SETS OF A PARALLEL LINES OPPOSITE ANGLES CONGRUENT

Photo by Dano

27.

RECTANGLE

4 right angles
Opposite sides are congruent
2 sets of parallel lines

Photo by Rosie Kerr

28.

RHOMBUS

All sides are congruent
Opposite angles are congruent

Photo by shizhao

29.

SQUARE

All sides are congruent
All angles are congruent
All angles are 90˚

Photo by cold_penguin1952

30.

CONGRUENT

EQUAL

Photo by colin.jagoe

31.

PENTAGON

5 SIDES

Photo by Mélisande*

32.

HEXAGON

6 SIDES

Photo by aubergene

33.

HEPTAGON

7 SIDES

34.

OCTAGON

8 SIDES

Photo by Peter Kaminski

35.

NONAGON

9 SIDES

Photo by origami_madness

36.

DECAGON

10 SIDES