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Geometry Vocabulary

Published on Feb 05, 2016

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1.

MATH VOCABULARY

~-BOBBI KEMP
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2.

ACUTE ANGLE

IS AN ANGLE SMALLER LESS THAN 90°).
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3.

OBTUSE ANGLE

MORE THAN 90 BUT LESS THAN 180
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4.

RIGHT ANGLE

AN ANGLE OF 90°, AS IN A CORNER OF A SQUARE
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5.

STRAIGHT ANGLE

AN ANGLE OF 180°.
Photo by Brenda Anderson
6.

VERTICAL ANGLE

EACH OF THE PAIRS OF OPPOSITE ANGLES MADE BY TWO INTERSECTING LINES.
7.

ADJACENT ANGLE

TWO ANGLES THAT HAVE A COMMON VERTEX
8.

COMPLEMENTARY ANGLES

EITHER OF TWO ANGLES WHOSE SUM IS 90°.
9.

SUPPLEMENTARY ANGLES

EITHER OF TWO ANGLES WHOSE SUM IS 180°.
10.

CORRESPONDING ANGLES

THE ANGLES THAT OCCUPY THE SAME RELATIVE POSITION
11.

TRANSVERSAL

INTERSECTING A SYSTEM OF LINES.
12.

ACUTE TRIANGLE

A TRIANGLE THAT HAS ALL ANGLES LESS THAN 90
Photo by Eva the Weaver
13.

RIGHT TRIANGLE

A TRIANGLE WITH A RIGHT ANGLE.
14.

OBTUSE TRIANGLE

A TRIANGLE THAT HAS AN ANGLE GREATER THAN 90° BUT LESS THAN 180
15.

SCALENE TRIANGLE

A TRIANGLE WITH ALL SIDES OF DIFFERENT LENGTHS
16.

ISOSCELES TRIANGLE

A TRIANGLE WITH TWO EQUAL SIDES
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17.

EQUILATERAL TRIANGLE

ALL THREE SIDES ARE EQUAL.
Photo by Julia Manzerova

Bobbi Kemp