Download Measuring Angles

Measuring Angles
Geometry
Date
Name
Acute Angle –
Right Angle –
Obtuse Angle –
Straight Angle –
Congruent Angles – Angles with the same measure.
A
B
__________ = __________
__________  __________
Angle Addition Postulate ____________ + ____________ = ____________
A
D
B
C
1. a) What are two other names for 1 ?
b) What are two other names for KML ?
c) Would it be correct to name any of the angles M ? Explain.
2. Find the measures of the following angles. Classify each as acute, right, obtuse, or
straight.
a) mLKN
b) mJKN
d) mLKH
e) mJKL
f) mHKN
g) mMKH
3. Synchronized swimmers form angles with their bodies as shown in the photo. If
mGHJ  90 and mABC  49 , find mKLM and mDEF . Explain.
4. If mROT  155 , what are mROS and mTOS ? Justify and explain.
5. DEF is a straight angle. What are mDEC and mCEF ? Justify and explain.
Reflection:
1. If mABD  85 , what is an expression to represent mABC ?