Page 170 - NUMINO TB_3A

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F NUMINO

fact family (page 119, Unit 13) L
line (page 53, Unit 6)
A group of related addition and subtraction,
A straight path that extends without end in
or multiplication and division sentences. both directions with no endpoints.

3 7 = 21 21 3 = 7 line of symmetry (page 138, Unit 15)

7 3 = 21 21 7 = 3 A line that divides a figure into 2 congruent
parts.
H
line of symmetry
half hour (page 147, Unit 16)
line segment (page 53, Unit 6)
A half hour has 30 minutes.
A part of a line that includes 2 points, called
hexagon (page 55, Unit 6)
endpoints, and all the points between them.
A closed figure with six sides and six angles.

endpoint endpoint

hour (page 147, Unit 16) M

A unit for measuring time. minute (page 146, Unit 16)
1 hour 60 minutes
A unit for measuring time.
I 1 minute 60 seconds

identity Property of Multiplication multiplication (page 84, Unit 9)

(page 116, Unit 12) The operation of finding the total of two or
The product of 1 and any number equals more equal groups.
that number
4 1=4

isosceles triangle (page 72, Unit 8)

A triangle with 2 equal sides.

4 cm 4 cm

3 cm

Glossary 159