MEASURING HEIGHTS WITH TRIANGLES Activity 1

VocabularyUse this table for each given word and for those that come across during the project. Follow an alphabetical order.

AWord Angle

Definition or synonym The union of 2 rays that have the same endpoint; measured in degrees or radians

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BWord Base

Definition or synonym A side of a polygon or a face of a solid figure by which the figure is measured or named

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MEASURING HEIGHTS WITH TRIANGLES Activity 1

CWord Circle

Definition or synonym A closed plane figure with all points of the figure the same distance from the center

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DWord Diameter

Definition or synonym A line segment that passes through the center of a circle and has its endpoints on the circle

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MEASURING HEIGHTS WITH TRIANGLES Activity 1

EWord Equilateral triangle

Definition or synonym A triangle with three congruent sides Use it in a sentence or

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FWord Fractal

Definition or synonym A figure with repeating patterns containing shapes that are like the whole but of different sizes throughout .

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G

MEASURING HEIGHTS WITH TRIANGLES Activity 1

Word Golden rectangleDefinition or synonym A rectangle with a length-to-

width ratio of about 1.6 to 1Use it in a sentence or

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HWord Hypotenuse

Definition or synonym In a right triangle, the side opposite the right angle

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I Word Isosceles triangle

MEASURING HEIGHTS WITH TRIANGLES Activity 1

Definition or synonym A triangle with two congruent sidesUse it in a sentence or

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J Word Joint

Definition or synonym The point where two components of a structure join rigidly.

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KWord Kite

Definition or synonym Plane shape having two sets of equal

MEASURING HEIGHTS WITH TRIANGLES Activity 1

sides and one set of opposite angles that are equal

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drawing

L

Word Line of symmetryDefinition or synonym A line that divides a figure into

two congruent parts Use it in a sentence or

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M

Word Map scale

Definition or synonym A ratio that compares the distance on a

MEASURING HEIGHTS WITH TRIANGLES Activity 1

map to the actual distanceUse it in a sentence or

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N

Word NetDefinition or synonym An arrangement of two-dimensional

figures that can be folded to make a polyhedron

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drawing

O

Word Obtuse triangle

Definition or synonym A triangle that has one obtuse angle 

MEASURING HEIGHTS WITH TRIANGLES Activity 1

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drawing

P

Word Pentagon

Definition or synonym A polygon with five sidesUse it in a sentence or

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Q

WordQuadrilateral

Definition or synonym A polygon with four sides 

MEASURING HEIGHTS WITH TRIANGLES Activity 1

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drawing

R

Word Radius

Definition or synonym A line segment with one endpoint at the center of a circle and the other endpoint on the circle

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drawing

S

Word Scalene triangle

Definition or synonym A triangle with no congruent sides

MEASURING HEIGHTS WITH TRIANGLES Activity 1

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drawing

T

Word Three-dimensional

Definition or synonym Measured in three directions, such as length, width, and height 

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U

Word Uniform crossed section

Definition or synonym a cross-section of a solid that is thesame size and shape as its base.

MEASURING HEIGHTS WITH TRIANGLES Activity 1

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drawing

VWord Volume

Definition or synonym The measure of the amount of space a solid figure occupies

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drawing

W

Word WidthDefinition or synonym Distance across from side to side.

MEASURING HEIGHTS WITH TRIANGLES Activity 1

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drawing

X

Word X-axisDefinition or synonym The horizontal number line on

a coordinate plane Use it in a sentence or

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Y

Word Y-axisDefinition or synonym The vertical number line on a coordinate

plane 

MEASURING HEIGHTS WITH TRIANGLES Activity 1

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drawing

Z

Word Zero DimensionsDefinition or synonym The property of a point that indicates no

motion is possible without leaving that point. Formally, saying a point has zero dimensions means that the only vector contained on the point is the zero vector.

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