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PSSA Geometry — Grade 7

M07.C-G · Scale Drawings · Triangles · Angles · Area & Volume

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Scale Drawings

Solve problems involving scale drawings of geometric figures, including finding length and area.

M07.C-G.1.1.1
Actual = Drawing measurement × Scale factor
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Triangle Properties

Identify and describe properties of all types of triangles based on angle and side measures.

M07.C-G.1.1.2
Angle sum = 180° · Classify by sides AND by angles
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Triangle Inequality Theorem

Use and apply the triangle inequality theorem to determine if side lengths can form a triangle.

M07.C-G.1.1.3
The sum of any two sides must be GREATER THAN the third side
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Cross Sections of 3D Figures

Describe the two-dimensional figures that result from slicing three-dimensional figures.

M07.C-G.1.1.4
Cut parallel to base → same shape as base · Cut through apex → triangle
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Angle Pairs

Supplementary, complementary, vertical, adjacent angles; angles formed by parallel lines cut by a transversal.

M07.C-G.2.1.1 & M07.C-G.2.1.2

Parallel Lines & Transversal — Reference Diagram

→ → 1 2 3 4 5 6 7 8
Corresponding (=): 1&5, 2&6, 3&7, 4&8
Alt. Interior (=): 3&6, 4&5
Alt. Exterior (=): 1&8, 2&7
Vertical (=): 1&4, 2&3, 5&8, 6&7
Co-interior / Same-side (supp.): 3&5, 4&6
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Circles — Circumference & Area

Find the area and circumference of a circle. Formulas are provided on the PSSA.

M07.C-G.2.2.1
C = 2πr  ·  A = πr²  ·  Use π = 3.14
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Area, Surface Area & Volume

Solve problems involving area, volume, and surface area of 2D and 3D figures including composite figures.

M07.C-G.2.2.2

Formula Reference

FigureFormula
Triangle\(A = \tfrac{1}{2}bh\)
Rectangle\(A = lw \quad P = 2l + 2w\)
Parallelogram\(A = bh\)
Trapezoid\(A = \tfrac{1}{2}h(b_1 + b_2)\)
Rect. Prism\(V = lwh \quad SA = 2lw + 2lh + 2wh\)
Polygonal Prism\(V = Bh \quad SA = Ph + 2B\)
Composite figureBreak into parts, add (or subtract for holes/notches)
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Flashcards

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10 questions · all geometry topics
Multiple choice · +10 pts per correct

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Guess the 5-letter math word — 6 tries · new word each day

Connections

Group 16 geometry terms into 4 categories of 4

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Make words using the 7 letters — center letter required

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