Math 1 · Unit 11 · Lesson 4 · part 1 of 4
The Words We Use
The vocabulary for this lesson, in one place.
Words we use
| Word | Plain English | What you do |
|---|---|---|
| Parallelogram | A four-sided shape with both pairs of opposite sides parallel. | Equal slopes, or diagonals with the same midpoint. |
| Rectangle | A parallelogram with four right angles. | Show one right angle with negative reciprocal slopes. |
| Rhombus | Four equal sides. | Distance on every side. |
| Square | Four equal sides and four right angles: a rectangle and a rhombus. | Distance and slope. |
| Isosceles, right triangle | Two equal sides; one right angle. | Distance; slope. |
| Diagonal | A segment joining two corners that are not next to each other. | Compare the midpoints of the two diagonals. |
| Prove | Show it must be true using math reasons. | A few clear sentences that name the tool and the result. |