Angles Angles Angles

Terms

100

What is the term for two adjacent angles which add up to 180^o

Supplementary (or Straight) Angle

200

In degrees, what is the measure of all right angles?

90^o

300

What is the term for angles with a measure less than 90^o?

Acute

400

The angle that measures greater than 90^o and less than 180^o

Obtuse

500

What symbol is used to show/indicate a right angle?

a small square

Triangles

100

How many sides do triangles have?

3 sides

200

Some triangles have right angles. (TRUE or FALSE)

TRUE

300

The interior degrees of a triangle will always measure to be ______.

180^o

400

An equilateral triangle (triangle with even sides) has 3 angles of how many degrees?

60^o

500

Triangles have 3 __________ (the word used for points in an angle, use the plural term)

Vertices

Quadrilaterals

100

Rectangles have three sets of parallel lines. (TRUE or FALSE)

FALSE

200

What does the latin root "quad" mean?

4

300

The sum of the inside angles of a quadrilateral is?

360^o

400

Which two quadrilaterals have 4 equal sides?

Square and rhombus

500

Which quadrilateral has only 1 set of parallel lines?

Trapezoid 

Lines

100

The point where rays (or lines) meet in an angle is called a ____?

Vertex

200

What figure has one end point, and continues infinitely in one direction; also found on angles.

Rays

300

What do you call a dot that stands alone in geometry?

Point

400

Two lines that will never meet is called _______ lines.

Parallel

500

A [line] that has two end points is called a _______.

Line Segment

Other

100

What is the term used for 2 angles that are opposite each other, where lines intersect, and they have the same measure?

vertical angles

200

Polygons are shapes that only have straights lines. (TRUE or FALSE)

TRUE

300

Triangles are considered quadrilaterals. (TRUE or FALSE)

FALSE

400

A circle is a polygon. (TRUE or FALSE)

FALSE 

500

Figures that are the same shape and size are considered to be _______.

Congruent