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Shape Detective & Angle Hunt Lab

Put on your detective hat! Classify every angle in 8 different shapes, then figure out what type of shape each one is.

Guided ExperimentShape Detective Investigation

Before you start hunting, predict, which shape do you think has the most right angles? Which shape do you think has the most acute angles?

Write your hypothesis in the Lab Report panel, then click Next.

Running Tally

(counts angles you have guessed)
0Acute
0Right
0Obtuse
0Straight

Shape 1 of 8: Equilateral Triangle

1 / 8
ABC

Classify each labeled angle in the shape below

A
B
C

Controls

Data Table

(0 rows)
#ShapeAngle AAngle BAngle CAngle DClassification
0 / 500
0 / 500
0 / 500

Reference Guide

Angle Types

Acute Less than 90° - like the tip of a pizza slice.

Right Exactly 90° - like the corner of a book.

Obtuse Between 90° and 180° - wider than a right angle.

Straight Exactly 180° - a straight line.

Triangle Types

Equilateral All 3 angles equal 60°.

Right One angle is exactly 90°.

Obtuse One angle is greater than 90°.

Acute All angles are less than 90°.

Quadrilateral Types

Square/Rectangle All 4 angles are 90°.

Parallelogram Opposite angles are equal.

Trapezoid One pair of parallel sides.

Angle Sums

The angles in a triangle always add up to 180°.

The angles in a quadrilateral (4 sides) always add up to 360°.

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