STAAR Grade 8 Geometry and Measurement Practice

What the test measures

Geometry and Measurement skills

solve problems involving Pythagorean relationships and volume
analyze similarity, transformations, and congruence
use coordinate geometry and slope
apply geometric reasoning to figures and solids
TEKS mathematical process standards applied to grade 8 content

Standards basis

Texas Essential Knowledge and Skills (TEKS) for Mathematics — Texas

How the STAAR reports it

STAAR math is a Texas state assessment built on the Texas Essential Knowledge and Skills (TEKS), not a Common Core framework. Texas publishes explicit STAAR reporting categories by grade/course, with item reporting aligned to TEKS content strands and student expectations.

Blueprint & weighting

TEA’s publicly visible STAAR Mathematics Resources page does not publish item weights in the page content reviewed here. The category structure is explicit, but no percentage blueprint was visible in the sourced materials.

Official sources

Texas Education Agency – STAAR Mathematics Resources
Texas Education Agency – STAAR Interim Assessments
Texas Education Agency – Texas Administrative Code, Title 19, Part 2

Practice by skill

Topics mapped to this domain

Try it now

8 free questions · 0/0 correct

Practice playeasy

A rectangular prism has length $3$ , width $3$ , and height $5$ . What is its volume?

$V = 3 \times 3 \times 5 = 45$ .

Practice playhard

A rectangular prism has a square base and height $6$ meters. Its volume is $96$ cubic meters. What is the side length of the base, in meters?

$V = s^2 h$ , so $96 = s^2 \cdot 6$ and $s^2 = 16$ . Then $s = 4\text{ m}\textsf{.}$

Practice playmedium

A gardener builds an open-top planter box in the shape of a rectangular prism. The inside measures $8$ inches long, $3$ inches wide, and $4$ inches deep, and the box has no lid. What is the exterior surface area, in square inches, of the planter?

Use $SA = 2lw + 2lh + 2wh$ with $l = 8$ , $w = 3$ , and $h = 4$ . Then $SA = 2(8)(3) + 2(8)(4) + 2(3)(4) = 48 + 64 + 24 = 136$ for a closed box. The open top removes one $8 \times 3$ face, so subtract $24$ to get $136 - 24 = 112$ square inches.

Practice playeasy

Find the volume of a cylinder with radius $1$ and height $10$ . Use $\pi = 3$ .

$V = \pi r^2 h = 3 \times 1 \times 10 = 30$ .

Practice playeasy

What is the distance from $(0, 0)$ to $(3, 4)$ ?

$\sqrt{3^2 + 4^2} = \sqrt{9 + 16} = \sqrt{25} = 5$ .

Practice playeasy

In $\triangle RST$ , $\angle R$ and $\angle T$ are congruent. The measure of each of these angles is $43.9^{\circ}$ . What is the measure of $\angle S$ ?

The congruent angles total $2 \times 43.9^{\circ} = 87.8^{\circ}$ , so $\angle S = 180^{\circ} - 87.8^{\circ} = 92.2^{\circ}$ .

Practice playeasy

What is the sum of the interior angles of a triangle?

The interior angle sum of a triangle is $180°$ .

Practice playeasy

The measures of two angles of a triangle are $37^{\circ}$ and $84^{\circ}\textsf{.}$ What is the measure of the remaining angle?

The sum of the interior angles of a triangle is $180^{\circ}\textsf{.}$ The remaining angle measures $180^{\circ} - 37^{\circ} - 84^{\circ} = 59^{\circ}\textsf{.}$